title: Idiopathic perforation of the sigmoid colon in Japan.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D007416:Intestinal Perforation / Q000175:diagnosis* / Q000453:epidemiology; D007564:Japan; D008297:Male; D008875:Middle Aged; D012810:Sigmoid Diseases / Q000175:diagnosis* / Q000453:epidemiology