1. Digestive Disease Center, CHA Bundang Medical Center, CHA University School of Medicine, Seongnam, Korea.
2. Department of General Surgery, CHA Bundang Medical Center, CHA University School of Medicine, Seongnam, Korea.
3. Interventional Research Center, M.I.Tech, Co. Ltd., Pyeongtaek, Korea.
4. Department of Pathology, CHA Bundang Medical Center, CHA University School of Medicine, Seongnam, Korea.
5. Korea Textile Development Institute, Daegu, Korea.