Indirect inguinal hernia in twins.
D000293:Adolescent; D001724:Birth Weight; D002648:Child; D002675:Child, Preschool; D004200:Diseases in Twins; D005260:Female; D006552:Hernia, Inguinal / Q000453:epidemiology / Q000235:genetics* / Q000601:surgery; D006801:Humans; D008297:Male; D012737:Sex Factors