1. Department of Gastroenterology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, China
2. Department of Gastroenterology, Lianshui People’s Hospital Affiliated to Kangda College of Nanjing Medical University, Huaian, Jiangsu 223400, China
3. Department of Gastroenterology, The Second People’s Hospital of Lianyungang, Lianyungang, Jiangsu 222006, China
4. Department of General Surgery, The Second Affiliated Hospital of Wannan Medical College, Wuhu, Anhui 241000, China
5. Department of Traditional Chinese Medicine, Lianshui People’s Hospital Affiliated to Kangda College of Nanjing Medical University, Huaian, Jiangsu 223400, China