1. Division of Endocrinology and Metabolism, Department of Internal Medicine; Yonsei University College of Medicine; Seoul Republic of Korea
2. Severance Executive Healthcare Clinic; Yonsei University Health System; Seoul Republic of Korea
3. Department of Internal Medicine; Yonsei University College of Medicine; Seoul Republic of Korea
4. Department of Pathology; Yonsei University College of Medicine; Seoul Republic of Korea
5. Department of Surgery; Yonsei University College of Medicine; Seoul Republic of Korea