1 Department of Gastroenterology, Putuo People's Hospital, Tongji University School of Medicine, number 1291, Jiangning road, Putuo, Shanghai, 200060, China.
2 Department of Gastroenterology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Number 301, Middle Yanchang road, Jing'an, Shanghai, 200072, China.
3 Department of Gastroenterology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Number 301, Middle Yanchang road, Jing'an, Shanghai, 200072, China. fengjiao080801@163.com.
4 Department of Gastroenterology, Putuo People's Hospital, Tongji University School of Medicine, number 1291, Jiangning road, Putuo, Shanghai, 200060, China. wjymail@163.com.
5 Department of Gastroenterology, Putuo People's Hospital, Tongji University School of Medicine, number 1291, Jiangning road, Putuo, Shanghai, 200060, China. guochuanyong@hotmail.com.
6 Department of Gastroenterology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Number 301, Middle Yanchang road, Jing'an, Shanghai, 200072, China. guochuanyong@hotmail.com.