Duplication of the upper urinary tract in children.
D002675:Child, Preschool; D005260:Female; D006801:Humans; D007021:Hypospadias / Q000453:epidemiology; D007223:Infant; D007668:Kidney / Q000002:abnormalities; D008297:Male; D014513:Ureter / Q000002:abnormalities; D001743:Urinary Bladder / Q000002:abnormalities; D014564:Urogenital Abnormalities