Posterior urethral valves in siblings.
D002675:Child, Preschool; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D014521:Urethra / Q000002:abnormalities*; D014522:Urethral Diseases / Q000235:genetics*; D014555:Urination Disorders / Q000235:genetics; D014718:Vesico-Ureteral Reflux / Q000235:genetics