[Incidence of silent gallstone studied by cholecystosonography].
D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002769:Cholelithiasis / Q000175:diagnosis* / Q000453:epidemiology; D005260:Female; D006801:Humans; D007564:Japan; D008297:Male; D008875:Middle Aged; D014463:Ultrasonography