1 Department of Infectious Diseases, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China; Research and Treatment Center for Infectious Diseases, Beijing 302 Hospital, Beijing 100039, China.
2 Research and Treatment Center for Infectious Diseases, Beijing 302 Hospital, Beijing 100039, China.
3 Department of Infectious Diseases, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China.
4 Department of Gastroenterology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China.