1. Department of Nuclear Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul
2. Department of Nuclear Medicine, GangNeung Asan Hospital, University of Ulsan College of Medicine, Gangneung
3. Endocrinologic Surgery
4. Kidney and Pancreas Transplantation, Department of Surgery
5. Division of Endocrinology, Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea.