1. Division of Endocrinology and Metabolism, Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
2. Division of Endocrinology and Metabolism, Department of Oncology and Arnie Charbonneau Cancer Institute, Cummings School of Medicine, University of Calgary, Calgary, AB, Canada.
3. Department of Pathology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.