Institution: | 1. Department of Pathology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China;2. Department of Pathology, HuaShan Hospital, Fudan University, Shanghai 200040, China;3. Endoscopy Center, ZhongShan Hospital, Fudan University, Shanghai 200032, China;4. Department of General Surgery, ChangZheng Hospital, Second Military Medical University, Shanghai 200003, China;5. Department of Anus and Intestine Surgery, PLA Central Hospital 150, Luoyang 471003, Henan, China |