title: Posterior and anterior aal prototomy: a simplified technic for postoperative aal stensis.
mesh_terms: D001004:Anus Diseases / Q000209:etiology / Q000601:surgery*; D006484:Hemorrhoids / Q000601:surgery; D006801:Humans; D008219:Lymphogranuloma Venereum / Q000150:complications; D008722:Methods