Departments of Internal Medicine, Kangdong Sacred Heart Hospital, Hallym University College of Medicine, 150, Seongan-ro, Gangdong-gu, Seoul, 05355, South Korea. Institute for Liver and Digestive Diseases, Hallym University, Chuncheon, South Korea. Departments of Neurology, Kangdong Sacred Heart Hospital, Hallym University College of Medicine, Seoul, South Korea. Department of Epidemiology, School of Public Health, Seoul National University, Seoul, South Korea. Department of Biomedical Systems Informatics, Yonsei University College of Medicine, Seoul, South Korea. Department of Biomedical Informatics, Ajou University, Suwon, South Korea. Department of Family Medicine, National Health Insurance Service Ilsan Hospital, Goyang, South Korea. Department of Internal Medicine, Ewha Womans University Medical Center, Ewha Womans University School of Medicine, Seoul, South Korea. Department of Endocrinology and Metabolism, Kyung Hee University School of Medicine, Seoul, South Korea. Biomedical Research Institute, Pusan National University Hospital, Busan, South Korea. Cardiovascular Center, Kyung Hee University Hospital at Gangdong, Kyung Hee University, Seoul, South Korea. Departments of Internal Medicine, Kangdong Sacred Heart Hospital, Hallym University College of Medicine, 150, Seongan-ro, Gangdong-gu, Seoul, 05355, South Korea. drhyangii@gmail.com.