1. Department of Gastroenterology Gaochun People's Hospital of Nanjing Nanjing China
2. Department of Geriatrics Gaochun People's Hospital of Nanjing Nanjing China
3. Department of Endocrinology, Suzhou Ninth People's Hospital Suzhou Ninth Hospital Affiliated to Soochow University Suzhou China
4. Nanjing Drum Tower Hospital Clinical College of Traditional Chinese and Western Medicine Nanjing University of Chinese Medicine Nanjing China
5. Department of Gastroenterology, Suzhou Ninth People's Hospital Suzhou Ninth Hospital Affiliated to Soochow University Suzhou China