[1] Seoul National University Bundang Hospital,Division of Gastroenterology, Department of Internal Medicine
[2] Konkuk University School of Medicine,Department of Dermatology
[3] Seoul National University Hospital Healthcare System Gangnam Center,Department of Internal Medicine and Healthcare Research Institute
[4] Seoul National University College of Medicine,Department of Internal Medicine and Liver Research Institute
[5] SMG-SNU Boramae Medical Center,Department of Dermatology
[6] Seoul National University College of Medicine,Laboratory of Intestinal Mucosa and Skin Immunology