1. Kocher, T.: Zur Pathologie und Therapie des Kropfes. Dtsch. Z. Chirug.4:417, 1874
2. Halsted, W.S.: The operative story of goiter. The author's operation. Johns Hopkins Rep.19:71, 1920
3. Lahey, F.H.: Routine dissection and demonstration recurrent laryngeal nerve in subtotal thyroidectomy. Surg. Gynecol. Obstet.66:775, 1938
4. Crile, G.W.: The prevention of abductor paralysis in thyroidectomy. Surg. Gynecol. Obstet.49:538, 1929
5. Riddell, V.H.: Injury to recurrent laryngeal nerves during thyroidectomy. Lancet1:638, 1956