1. Department of Gastroenterology, The First People’s Hospital of Yunnan Province, The Affiliated Hospital of Kunming University of Science and Technology, Kunming 650032, Yunnan, China
2. Medical School, Kunming University of Science and Technology, Kunming 650500, Yunnan Province, China
3. Department of Critical Care Medicine, Jieyang Third People’s Hospital, Jieyang 515500, Guangdong Province, China
4. The First Clinical Medical College, Lanzhou University, Lanzhou 730000, Gansu Province, China
5. Cardiology Department, Geriatrics Department, Foshan Women and Children Hospital, Foshan 528000, Guangdong, China
6. University Munich, Munich D-81377, Germany
7. Department of Gastroenterology, School of Medicine, Shanghai East Hospital, Tongji University, Shanghai 310115, China