title: Comparative trial of oral cholecystographic contrast agents.
mesh_terms: D000284:Administration, Oral; D000328:Adult; D000368:Aged; D002765:Cholecystography; D003287:Contrast Media / Q000008:administration & dosage / Q000009:adverse effects; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged
chemical_list: D003287:Contrast Media