^○Kim Gwang Ha, Lee Moon Won, Park Chul Hong, Lee Bong Eun, Song Geun Am, Jeon Hye Kyung (Dept. of Internal Medicine, Pusan National University Hospital, Korea)

^○Kim Hak Soo, Song Ga Won, Ko Weon Jin, Hahm Ki Baik, Kim Won Hee, Hong Sung Pyo, Cho Joo Young (Digestive Disease Center, CHA Bundang Medical Center, CHA University,Korea)

^○Kim Dujin, Lee Jong Hun, Kim Woon Suk (Dept. of Internal Medicine, Suhgwang General Hospital, Gwangju, Korea)