1 Department of Functional Intestinal Diseases, General Surgery of Shanghai Tenth People's Hospital, Tenth People's Hospital of Tongji University, Shanghai 200072, P. R. China.
2 School of Medicine, Tongji University, Shanghai 200072, P. R. China.
3 The Nursing Department, Shanghai Tenth People's Hospital, Tenth People's Hospital of Tongji University, Shanghai 200072, P. R. China.
4 Shanghai Gastrointestinal Microecology Research Center, Shanghai 200072, P. R. China.
5 Shanghai Institution of Gut Microbiota Research and Engineering Development, Shanghai 200072, P. R. China.
6 Anhui University of Science and Technology First Clinical Medical College, Huainan, Anhui Province 232001, P. R. China.
7 Bengbu First People's Hospital, Bengbu, Anhui Province 233000, P. R. China.