Division of Gastroenterology, Department of Medicine "Assistant Professor, Division of Gastroenterology, Department of Medicine, Sungkyunkwan University School of Medicine, Samsung Medical Center" Specialty Training Fellowship : Division of Gastroenterology, Department of Medicine, Sungkyunkwan University School of Medicine, Samsung Medical Center Residency : Department of Medicine, Sungkyunkwan University School of Medicine, Samsung Medical Center Internship : Sungkyunkwan University School of Medicine, Samsung Medical Center Participation in Academic Societies and Research Member, Korean Medical Association Member, Korean Association of Internal Medicine Member, Korean Society of Gastroenterology Member, Korean Society of Neurogastroenterology and Motility Member, Korean Society of Gastrointestinal Endoscopy Member, Korean College of Helicobacter and Upper Gastrointestinal Research Member, Korean Association for the Study of Intestinal Diseases Member, Korean Association for the Study of the Liver