1. Molecular Epidemiology Branch, Division of Cancer Epidemiology and Prevention; Research Institute and Hospital, National Cancer Center; Goyang Republic of South Korea
2. Cancer Registration and Statistics Branch, Division of Cancer Registration and Surveillance; Research Institute and Hospital, National Cancer Center; Goyang Republic of South Korea
3. Department of Otolaryngology-Head and Neck Surgery, Head & Neck Oncology Clinic, Center for Thyroid Cancer; Research Institute and Hospital, National Cancer Center; Goyang Republic of South Korea