Self-assessment quiz: functional megacolon.
D002675:Child, Preschool; D003248:Constipation / Q000523:psychology; D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D008531:Megacolon / Q000175:diagnosis / Q000523:psychology*; D011602:Psychophysiologic Disorders / Q000175:diagnosis*; D014039:Toilet Training