So Youn Park*, Ji Kon Ryu*, Ju Hee Park*, Hyuk Yoon*, Ji Yeon Kim*, Yong Bum Yoon*, Jae-Gahb Park†, Sang Hyub Lee‡, Sung-Bum Kang§, Ji Won Park∥, and Jae Hwan Oh∥
Departments of *Internal Medicine, †General Surgery, Seoul National University College of Medicine, Seoul, Departments of ‡Internal Medicine, §General Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, and ∥Colon Cancer Center, National Cancer Center, Goyang, Korea
Ji Kon Ryu
© The Korean Society of Gastroenterology, the Korean Society of Gastrointestinal Endoscopy, the Korean Society of Neurogastroenterology and Motility, Korean College of Helicobacter and Upper Gastrointestinal Research, Korean Association the Study of Intestinal Diseases, the Korean Association for the Study of the Liver, Korean Pancreatobiliary Association, and Korean Society of Gastrointestinal Cancer. All rights reserved.