title: Posterior urethral valves--new concepts.
authors.forename: S P
authors.initials: SP
authors.lastname: Greenfield
mesh_terms: D002648:Child; D006801:Humans; D016030:Kidney Transplantation; D014521:Urethra / Q000002:abnormalities* / Q000601:surgery; D001748:Urinary Bladder Neck Obstruction / Q000175:diagnosis / Q000209:etiology