Umbilical hernia and surgical indications.
D000293:Adolescent; D000349:Africa; D002648:Child; D002675:Child, Preschool; D005260:Female; D006552:Hernia, Inguinal / Q000601:surgery; D006554:Hernia, Umbilical / Q000453:epidemiology / Q000601:surgery*; D006801:Humans; D007223:Infant; D008297:Male