1. Dalian Medical University, Dalian, China
2. Department of Gastroenterology, Affiliated Hospital of Yangzhou University, Yangzhou, China
3. Department of Health Promotion Center, Affiliated Hospital of Yangzhou University, Yangzhou, China
4. Department of Ultrasound, Affiliated Hospital of Yangzhou University, Yangzhou, China
5. Institute of Digestive Diseases, Yangzhou University, Yangzhou, China
6. Department of Gastroenterology, Changhai Hospital, Second Military Medical University, Shanghai, China
7. Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, College of Veterinary Medicine, Yangzhou University, Yangzhou, China