Affiliation: | 1. Head and Neck Oncology Clinic, Center for Thyroid Cancer, Department of Otolaryngology, Research Institute and Hospital, National Cancer Center, Goyang, Korea;2. Sanford Cancer Research Center, Sanford ENT – Head and Neck Surgery, University of South Dakota, Sioux Falls, South Dakota;3. Genitourinary Cancer Branch, Research Institute and Hospital, National Cancer Center, Goyang, Korea;4. Department of Anesthesiology, Sungkyunkwan University, Samsung Medical Center, Seoul, Korea |