Prospective randomized study on injury of the external branch of the superior laryngeal nerve during thyroidectomy comparing intraoperative nerve monitoring and a conventional technique - Masuoka, H; Higashiyama, T; Yabuta, T; Fukushima, M; Ito, Y; Kihara, M; Kobayashi, K; Yamada, O; Nakayama, A; Miya, A (Head & Neck, 2015)