1. Department of Digestive Diseases, Huashan Hospital, Fudan University, Shanghai, China
2. Huashan Rare Disease Center, Huashan Hospital, Fudan University, Shanghai, China
3. Department of Pathology, Huashan Hospital, Fudan University, Shanghai, China
4. Department of Digestive Diseases, Shanghai Guanghua Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China