title: External sphincterotomy: effect on penile erection.
mesh_terms: D000328:Adult; D007172:Erectile Dysfunction / Q000209:etiology*; D006801:Humans; D008297:Male; D011183:Postoperative Complications; D013119:Spinal Cord Injuries / Q000601:surgery; D014521:Urethra / Q000601:surgery*