title: External sphincterotomy in boys with meningomyelocele.
mesh_terms: D002648:Child; D006801:Humans; D008297:Male; D011312:Pressure; D016135:Spinal Dysraphism / Q000150:complications*; D013525:Surgical Instruments; D001743:Urinary Bladder / Q000503:physiopathology / Q000601:surgery*; D001750:Urinary Bladder, Neurogenic / Q000209:etiology / Q000601:surgery*; D014555:Urination Disorders / Q000209:etiology*; D014567:Urography