1. Department of Gastroenterology, Chengdu Second People’s Hospital, Chengdu, People’s Republic of China
2. Department of Gastroenterology, the Second Affiliated Hospital of Chongqing Medical University, Chongqing, People’s Republic of China
3. Department of General Practice, The Second Affiliated Hospital of Chongqing Medical University, People’s Republic of China
4. Department of Rheumatology and Immunology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, People’s Republic of China
5. Department of Gastroenterology, the First Affiliated Hospital of Chongqing Medical University, Chongqing, People’s Republic of China