[1] Department of Gastroenterology, Huashan Hospital, Fudan University, Shanghai 200040, China
[2] Department of Laboratory, Huashan Hospital, Fudan University, Shanghai 200040, China
[3] Department of Pathology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
[4] First Clinical College of Nanjing, Traditional Chinese Med. Unversity, Nanjing 210029, China