Affiliation: | 1. Department of Internal Medicine, Seoul National University College of Medicine, Seoul, South Korea;2. Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, South Korea;3. Touchstone Diabetes Center, The University of Texas Southwestern Medical Center, Dallas, Texas, USA;4. Touchstone Diabetes Center, The University of Texas Health Science Center at Houston Brown Foundation Institute of Molecular Medicine for the Prevention of Human Diseases, Houston, Texas, USA |