1. Department of Endocrinology and Metabolism, Inha University School of Medicine, Incheon, Korea.
2. Department of Nephrology and Hypertension, Inha University School of Medicine, Incheon, Korea.
3. Department of Biomedical Sciences, Inha University School of Medicine, Incheon, Korea.
4. Department of Endocrinology and Metabolism, Kyung Hee University School of Medicine, Seoul, Korea.
5. Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea.
6. Department of Molecular and Integrative Physiology, University of Illinois at Urbana-Champaign, IL, USA.
7. Department of Endocrinology and Metabolism, Ajou University School of Medicine, Suwon, Korea.