1. Division of Endocrinology and Metabolism, Department of Internal Medicine, Pusan National University School of Medicine, Yangsan, Korea.
2. Research Institute for Convergence of Biomedical Science and Technology, Pusan National University School of Medicine, Yangsan, Korea.
3. Department of Family Medicine, Pusan National University Yangsan Hospital, Pusan National University School of Medicine, Yangsan, Korea.