^○Qi Qingqing, Guo Chuanguo, Ji Rui, Li Zhen, Zuo Xiuli, Li Yanqing (Dept.of Gastroenterology, Qilu Hospital, Shandong University, China)

^○Zhang Yalin¹, Bai Liang³, Li Zhen², Ji Rui², Zuo Xiuli², Gao Xiaozhong¹, Li Yanqing² (1.Dept.of Gastroenterology, Weihai Municipal Hospital, Weihai, China, 2.Dept.of Gastroenterology, Qilu Hospital, Shandong University, Jinan, Shandong, China, 3.Dept. of Hepato-biliary Surgery, Weihai Municipal Hospital, China)

^○Cho Joo Young¹, Song Ga Won¹, Ko Weon Jin¹, Hahm Ki Baik¹, Lee Don Haeng² (1.Digestive Disease Center, CHA Bundang Medical Center, CHA University, Korea, 2.Div. of Gastroenterology, Inha University College of Medicine, Korea)

^○Kim Seung Han, Chun Hoon Jai, Yoo In Kyung, Lee Jae Min, Choi Hyuk Soon, Kim Eun Sun, Keum Bora, Jeen Yoon Tae, Lee Hong Sik, Kim Chang Duck (Dept. of Internal Medicine, Korea University College of Medicine, Korea)

^○Yoo In Kyung¹, Choi Hyuk Soon¹, Kang Seung Hun¹, Lee Jae Hyung¹, Kim Seung Han¹, Lee Jae Min¹, Kim Eun Sun¹, Keum Bora¹, Jeen Yoon Tae¹, Chun Hoon Jai¹, Lee Hong Sik¹, Kim Chang Duck¹, Kim Yoonjin², Kim Byung-Gon², Park Sei-Hoon², Song Yongnam², Hong Daehie (1.Dept.of Internal Medicine,Korea University Hospital, Korea, 2.Dept.of Mechanical Engineering, Korea University, Seoul, Korea)