[Clinical studies on congenital hydronephrosis in infants].
D000008:Abdominal Neoplasms / Q000175:diagnosis; D001006:Anus, Imperforate / Q000175:diagnosis; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D006869:Hydronephrosis / Q000151:congenital* / Q000175:diagnosis; D007223:Infant; D008297:Male; D011704:Pyelonephritis / Q000175:diagnosis; D014567:Urography