1. Department of Gastroenterology, The Second Hospital of Hebei Medical University, Hebei Key Laboratory of Gastroenterology, Hebei Institute of Gastroenterology, Hebei Clinical Research Center for Digestive Disease , Hebei , China
2. Department of Infectious Diseases, The Second Hospital of Hebei Medical University , Shijiazhuang , Hebei , China
3. Emergency Department, The Second Hospital of Hebei Medical University , Shijiazhuang , Hebei , China