Status: current, Not sufficiently defined by necessary conditions definition status (core metadata concept). Date: 31-Jan 2002. Module: SNOMED CT core
Descriptions:
Id | Description | Lang | Type | Status | Case? | Module |
5277869017 | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | en | Definition | Active | Entire term case sensitive (core metadata concept) | SNOMED CT core |
5277870016 | A broad term that encompasses several types of imaging studies that use ionising radiation for visualisation of internal parts of the body using X-ray techniques, for example computed tomography. | en | Definition | Active | Entire term case sensitive (core metadata concept) | SNOMED CT core |
414916017 | Radiographic imaging | en | Synonym (core metadata concept) | Active | Entire term case insensitive (core metadata concept) | SNOMED CT core |
414917014 | Radiology techniques | en | Synonym (core metadata concept) | Active | Entire term case insensitive (core metadata concept) | SNOMED CT core |
671227019 | Radiographic imaging - action (qualifier value) | en | Fully specified name | Active | Entire term case insensitive (core metadata concept) | SNOMED CT core |
2669814017 | Radiographic imaging - action | en | Synonym (core metadata concept) | Active | Entire term case insensitive (core metadata concept) | SNOMED CT core |
235311000077112 | action : imagerie radiographique | fr | Synonym (core metadata concept) | Active | Entire term case insensitive (core metadata concept) | SNOMED CT Switzerland NRC maintained Module |
Outbound Relationships | Type | Target | Active | Characteristic | Refinability | Group | Values |
A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Is a | Imaging - action | true | Inferred relationship | Some |
Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group |
Tomographic imaging, plain radiologic - action (qualifier value) | Is a | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | |
Computed tomography imaging - action (qualifier value) | Is a | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | |
Conventional projectional imaging that uses ionising radiation to produce images of internal structures by sending X-ray beams through the body which are absorbed in different amounts depending on the density of the structure. Plain X-ray uses X-ray alone and does not include more complex acquisition techniques such as fluoroscopy and computed tomography. | Is a | True | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | |
Fluoroscopic imaging - action (qualifier value) | Is a | True | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | |
radiographie de l'atlas et de l'axis | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Plain X-ray of clavicle (procedure) | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 3 |
radiographie de l'ouverture supérieure du thorax | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Plain X-ray of patella (procedure) | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Ear soft tissue X-ray | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Soft tissue X-ray nose | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Neck soft tissue X-ray | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Soft tissue X-ray mouth | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Soft tissue X-ray limbs | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Barium swallow | Method | True | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Barium follow through | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 3 |
Barium enema | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Colostomy enema | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Double contrast barium meal | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Cystography | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
urétrographie | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
isterosalpingografia | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Female genital system contrast procedure | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Male genital system contrast procedure | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Dacryocystogram | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 2 |
sialographie | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Imaging of breast with contrast (procedure) | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Arthrography of knee joint (procedure) | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Sacroiliac joint arthrogram | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Arthrography of hip joint (procedure) | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Fluoroscopy of diaphragm | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 2 |
radiographie d'un échantillon pathologique | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Insertion of intravascular device in common iliac vein, complete | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | |
Unilateral imaging of carotid artery | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Open removal of tubal prosthesis from esophagus | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | |
Fibreoptic endoscopic balloon dilation of oesophagus | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | |
Rigid esophagoscopy and balloon dilation (procedure) | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | |
Intubation of oesophagus for pH manometry | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | |
Open excision of polyp of stomach | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | |
Open laser destruction of lesion of stomach | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | |
Cryotherapy of gastric lesion (procedure) | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | |
Resection of gastric ulcer by cautery | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | |
Open insertion of prosthesis into stomach | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | |
Attention to gastric balloon | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | |
Open destruction of lesion of jejunum | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Jejunoscopy and insertion of tube prosthesis | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | |
Open destruction of lesion of ileum | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Ileoscopy and insertion of tube prosthesis | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | |
Barium enema for radiological reduction of intussusception of ileum | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 2 |
Endoscopic insertion of tubal prosthesis into sigmoid colon using rigid sigmoidoscope | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | |
Radiological reduction of intussusception of rectum using barium enema | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Hydrostatic reduction of intussusception of rectum (procedure) | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 2 |
Percutaneous embolisation of hepatic artery | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Percutaneous cholecystostomy | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | |
Percutaneous fragmentation of gallbladder stone | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 2 |
Percutaneous dissolution therapy to calculus in gallbladder | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 3 |
Open renewal of bile duct stent | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | |
Open removal of bile duct stent | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | |
incision du sphincter d'Oddi par voie duodénale | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Sphincterotomy of bile duct and pancreatic duct using duodenal approach | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Operative cholangiography through cystic duct | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Direct puncture operative cholangiography | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Endoscopic incision of sphincter of Oddi | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 2 |
Endoscopic sphincterotomy of sphincter of Oddi and insertion of tubal prosthesis into bile duct | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 3 |
Endoscopic sphincterotomy of accessory ampulla of Vater | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Endoscopic change of biliary stent | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | |
Endoscopic removal of biliary stent | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | |
Endoscopic retrograde cholangiopancreatography | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 7 |
Endoscopic retrograde pancreatography | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Endoscopic retrograde pancreatography via accessory ampulla of Vater | Method | True | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
cholangiographie percutanée | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
cholangiographie par drain de Kehr | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Prograde operative pancreatography | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
pancréatogramme par voie percutanée | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Percutaneous transluminal cardiac valvotomy | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | |
Percutaneous transluminal coronary thrombolysis using streptokinase | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Percutaneous rotational coronary endarterectomy | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 2 |
Percutaneous embolectomy of pulmonary artery | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 2 |
Transesophageal angiography of aorta | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Percutaneous embolectomy of brachial artery | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 2 |
Percutaneous embolisation of vertebral artery | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Percutaneous embolization of renal artery | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Insertion of iliac artery stent | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 2 |
Percutaneous embolectomy of femoral artery | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 2 |
Percutaneous embolectomy of popliteal artery | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 2 |
Endoscopic ultrasound fragmentation of renal calculus | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | |
Endoscopic laser fragmentation of renal calculus | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | |
Percutaneous nephrolithotomy without disintegration | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 2 |
Percutaneous needle biopsy of renal lesion (procedure) | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Percutaneous drainage of renal lesion | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 2 |
Percutaneous aspiration of renal lesion | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Antegrade pyelogram | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Nephrostogram | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Retrograde catheter ureteropyelography | Method | True | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Retrograde bulb ureteropyelography | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Radiography of ribs | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Venography of adrenal, bilateral | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 2 |
Pulmonary phlebography | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 2 |
Removal of calculus of renal pelvis through percutaneous nephrostomy | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 2 |
Radiologic guidance for dilation of ureters | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
radiographie du sternum | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Angiocardiography with carbon dioxide negative contrast | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Reference Sets