1. Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Korea
2. Department of Biochemistry and Molecular Biology, Seoul National University College of Medicine, Seoul, Korea
3. Division of Endocrinology and Metabolism, Department of Internal Medicine, Diabetes Center, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
4. Department of Pediatrics, Seoul National University Bundang Hospital, Seongnam, Korea