Dralle H, Sitges-Serra A, Angelos P, Poveda MC, Dionigi G, Barczynski M, Phelan E, Randolph G. Intraoperative Monitoring of the Recurrent Laryngeal Nerve during Thyroidectomy: A Standardized Approach Part 2. World J Endoc Surg 2012; 4 (1):33-40.