Dr. Yoon Woo Koh M.D., Ph. D. is the professor of Otorhinolaryngology and professor of Thyroid cancer clinic at Yonsei University College of Medicine Seoul, Korea and Director, International Affiars, KOREAN SOCIETY OF OTORHINOLARYNGOLOGY HEAD AND NECK SURGERY / Chair, International Affairs, Korean Society of Head and Neck Surgery. He is also serving as General Secretary of International Guild of Robotic & Endoscopic Head and Neck Surgery.