Won Jae Yoon*, Yong Bum Yoon*, Youn Joo Kim†, Ji Kon Ryu*, and Yong-Tae Kim*
Department of Internal Medicine, *Seoul National University College of Medicine, and †Korea Cancer Center Hospital, Seoul, Korea
Yong Bum Yoon
© 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.