| Affiliation: | 1. Department of Surgery, Seoul National University Hospital and College of Medicine, Seoul, Korea;2. Cancer Research Institute, Seoul National University College of Medicine, Seoul, Korea;3. Division of Surgery, Thyroid Center, Seoul National University Cancer Hospital, Seoul, Korea;4. Department of Occupational and Environmental Medicine & Center for Occupational and Environmental Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea;5. Department of Surgery, Bundang Seoul National University Hospital, Seoul, Korea;6. Department of Pathology, Seoul National University College of Medicine and Hospital, Seoul, Korea |
