Korean Society of Thyroid-Head and Neck Surgery Guideline Task Force, Young-Hoon Joo, Jae-Keun Cho, Bon Seok Koo, Minsu Kwon, Seong Keun Kwon, Soon Young Kwon, Min-Su Kim, Jeong Kyu Kim, Heejin Kim, Innchul Nam, Jong-Lyel Roh, Young Min Park, Il-Seok Park, Jung Je Park, Sung-Chan Shin, Soon-Hyun Ahn, Seongjun Won, Chang Hwan Ryu, Tae Mi Yoon, Giljoon Lee, Doh Young Lee, Myung-Chul Lee, Joon Kyoo Lee, Jin Choon Lee, Jae-Yol Lim, Jae Won Chang, Jeon Yeob Jang, Man Ki Chung, Yuh-Seok Jung, Jae-Gu Cho, Yoon Seok Choi, Jeong-Seok Choi, Guk Haeng Lee, Phil-Sang Chung