[1] Seoul National University Bundang Hospital,Department of Internal Medicine
[2] Keimyung University School of Medicine,Department of Internal Medicine
[3] Gyeongsang National University School of Medicine,Department of Internal Medicine and Institute of Health Science
[4] College of Medicine,Department of Internal Medicine
[5] Chungbuk National University,Department of Internal Medicine
[6] Hallym University College of Medicine,Department of Internal Medicine
[7] Chuncheon Sacred Heart Hospital,Departments of Internal Medicine, College of Medicine
[8] Ewha Womans University School of Medicine,Department of Internal Medicine
[9] The Catholic University of Korea,Department of Internal Medicine
[10] Wonkwang University School of Medicine,Digestive Disease Center, CHA Bundang Medical Center
[11] Kosin University College of Medicine,Department of Internal Medicine
[12] CHA University,Department of Internal Medicine
[13] Chonnam National University Medical School,Department of Internal Medicine
[14] Pusan National University School of Medicine and Biomedical Research Institute,Department of Internal Medicine and Research Institute
[15] Pusan National University Hospital,undefined
[16] Eulji General Hospital,undefined
[17] Eulji University School of Medicine,undefined
[18] Soonchunhyang University College of Medicine,undefined