1. Department of Microbiota Medicine, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210011, China
2. Department of Gastroenterology, Tangdu Hospital, Air Force Medical University, Xi’an, Shaanxi 710032, China
3. Department of Gastroenterology, The First Affiliated Hospital of Guangdong Pharmaceutical University, Guangzhou, Guangdong 510062, China
4. Department of Gastroenterology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215001, China
5. Xijing Hospital of Digestive Diseases, Xijing Hospital, Air Force Medical University, Xi’an, Shaanxi 710032, China