1. Department of Gastroenterology, First Hospital of Quanzhou Affiliated to Fujian Medical University, Quanzhou, Fujian, China
2. Department of Preventive Medicine, School of Inspection and Prevention, Quanzhou Medical College, Quanzhou, Fujian, China
3. Department of Infectious Diseases, First Hospital of Quanzhou Affiliated to Fujian Medical University, Quanzhou, Fujian, China
4. Department of Radiology, First Hospital of Quanzhou Affiliated to Fujian Medical University, Quanzhou, Fujian, China
5. Department of Endocrinology, First Hospital of Quanzhou Affiliated to Fujian Medical University, Quanzhou, Fujian, China.