Acute appendicitis in children.
D000367:Age Factors; D001064:Appendicitis / Q000150:complications / Q000175:diagnosis / Q000453:epidemiology*; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D007416:Intestinal Perforation / Q000209:etiology; D008297:Male; D009674:Nova Scotia