1. Division of Gastroenterology, Northern Jiangsu People’s Hospital, Yangzhou, China
2. Division of Gastroenterology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, China
3. Division of Gastroenterology, Yinzhou Hospital Affiliated to Medical School of Ningbo University, Ningbo, China
4. Institute of Acupuncture and Moxibustion, China Academy of Chinese Medical Sciences, Beijing, China
5. Division of Gastroenterology, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
6. Division of Gastroenterology, the Affiliated Huaian No. 1 People’s Hospital of Nanjing Medical University, Huaian, China
7. Division of Gastroenterology, Wangjing Hospital of China Academy of Chinese Medical Sciences, Beijing, China
8. Division of Gastroenterology and Hepatology, School of Medicine, University of Michigan, Ann Arbor, Michigan