1. Department of Gastroenterology and Hepatology, Shanghai Tongji Hospital, Tongji University School of Medicine, Shanghai, China (mainland)
2. Department of Gastroenterology and Hepatology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China (mainland)
3. Department of Pathology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China (mainland)