1. KUMC Thyroid Center, Korea University Anam Hospital, Seoul, Korea.
2. Division of Thyroid Surgery, Jilin Provincial Key Laboratory of Surgical Translational Medicine, China-Japan Union Hospital of Jilin University, Changchun, China.
3. Department of Surgery, Seoul Metropolitan Government-Seoul National University Boramae Medical Center, Seoul, Korea.
4. Department of Otolaryngology-Head and Neck Surgery, The Johns Hopkins University School of Medicine, Baltimore, MD, USA.
5. Department of General, Visceral, and Transplantation Surgery, University Hospital Essen, Essen, Germany.
6. Division of Endocrine Surgery, Department of Human Pathology in Adulthood and Childhood “G. Barresi”, University Hospital G. Martino, University of Messina, Messina, Italy.