1 Department of Gastroenterology, Ajou University School of Medicine, 164 Worldcup-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do, 16499, Korea.
2 New Medical Technology Study Group, Pancreatobiliary Association, Seoul, Korea.
3 Department of Gastroenterology, Ajou University School of Medicine, 164 Worldcup-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do, 16499, Korea. jinhkim@ajou.ac.kr.
4 Division of Gastroenterology, Department of Internal Medicine, Hallym University Dongtan Sacred Heart Hospital, Hallym University College of Medicine, Hwaseong, Korea.
5 Digestive Disease Center, CHA Bundang Medical Center, CHA University School of Medicine, Seongnam, Korea.
6 Division of Gastroenterology, Department of Internal Medicine, Inha University School of Medicine, Incheon, Korea.