1. Department of Infectious Diseases, Huashan Hospital, Fudan University, Shanghai, People’s Republic of China
2. Department of Clinical Laboratory, Huashan Hospital, Fudan University, Shanghai, People’s Republic of China
3. Department of Infectious Diseases, No. 988. Hospital of Liberation Army, Henan, People’s Republic of China
4. Department of Infectious Diseases, Qingpu Branch of Zhongshan Hospital, Fudan University, Shanghai, People’s Republic of China
5. Department of Infectious Diseases, Xuchang Central Hospital affiliated to Henan University of Science and Technology, Henan, People’s Republic of China
6. Department of Gastroenterology, Huashan Hospital, Fudan University, Shanghai, People’s Republic of China