1. Department of Surgery; Seoul National University Bundang Hospital; 300 Gumi-dong Bundang-gu Seongnam-si Gyeonggi-do Korea
2. Thyroid and Endocrine Surgery Section, Department of Surgery; Gachon University Gil Medical Center; Incheon Republic of Korea
3. Department of Preventive Medicine; Seoul National University College of Medicine; 101 Daehak-ro Jongno-gu Seoul Korea
4. Department of Surgery; Seoul National University Hospital and College of Medicine; 101 Daehak-ro Jongno-gu Seoul Korea
5. Cancer Research Institute; Seoul National University College of Medicine; Seoul Korea
6. Department of Surgery; Seoul National University Hospital Boramae Medical Center; Seoul Korea