[Mass screening by oral cholecystography].
D000328:Adult; D002765:Cholecystography; D005705:Gallbladder Diseases / Q000000981:diagnostic imaging / Q000453:epidemiology; D005767:Gastrointestinal Diseases / Q000000981:diagnostic imaging; D006801:Humans; D008297:Male; D008403:Mass Screening; D008875:Middle Aged