title: Control groups in studies of contrast media adverse events.
authors: Department of Diagnostic Radiology 54E2, Copenhagen University Hospital Herlev-Gentofte, Herlev, Denmark henrik.thomsen@regionh.dk.
authors: Henrik S
authors: HS
authors: Thomsen
authors: Consultant emeritus, Diagnostic Radiology Department, St Bartholomews Hospital, London, UK.
authors: Judith Aw
authors: JA
authors: Webb
mesh_terms: D003287:Contrast Media / Q000009:adverse effects*; D035061:Control Groups; D006801:Humans; D011871:Radiology; D016032:Randomized Controlled Trials as Topic; D012107:Research Design
chemical_list: D003287:Contrast Media