title: A comparative clinical study of two cholecystographic agents.
mesh_terms: D000328:Adult; D001565:Benzoates; D002765:Cholecystography; D002986:Clinical Trials as Topic; D003287:Contrast Media; D006801:Humans; D007455:Iodine; D007480:Iopanoic Acid; D008297:Male
chemical_list: D001565:Benzoates; D003287:Contrast Media; D007455:Iodine; D007480:Iopanoic Acid