1. Center for IBD Research, Shanghai Tenth People’s Hospital, School of Medicine, Tongji University, Shanghai, China
2. Department of Gastroenterology, Affiliated Hospital of Putian University, Putian, China
3. Department of Gastroenterology, Linfen Central Hospital of Shanxi Medical University, Linfen, China
4. Department of Gastroenterology, Zhengzhou Central Hospital Affiliated to Zhengzhou University, Zhengzhou, China
5. Department of Gastroenterology, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou, China