Won Jae Yoon*, Ji Kon Ryu*, Yong-Tae Kim*, Yong Bum Yoon*, Sun-Whe Kim†, and Woo Ho Kim‡
Departments of *Internal Medicine, †Surgery, and ‡Pathology, Seoul National University College of Medicine, Seoul, 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.