1. Department of Gastroenterology; Shanghai Tenth People's Hospital, Tongji University School of Medicine; Shanghai China
2. Department of Gastroenterology; Minhang Hospital, Fudan University; Shanghai China
3. Department of Gastroenterology; Shanghai Tenth Hospital, School of Clinical Medicine of Nanjing Medical University; Shanghai China
4. Department of Clinical Laboratory; Kunshan First People's Hospital Affiliated to Jiangsu University; Kunshan JiangSu China
5. Department of Gastroenterology; Jinshan Hospital of Fudan University; Jinshan Shanghai China
6. Department of Gastroenterology; Shanghai Tongren Hospital, Shanghai Jiao Tong University School of Medicine; Shanghai China