1 Beijing Ditan Hospital, Capital Medical University, Beijing, China.
2 Department of Infectious Diseases, Fifth Medical Center of Chinese, PLA General Hospital, National Clinical Research Center for Infectious Diseases, 100 Xisihuan Road, Fengtai District, Beijing, 100039, China.
3 Beijing Ditan Hospital, Capital Medical University, Beijing, China. fswang302@163.com.
4 Department of Infectious Diseases, Fifth Medical Center of Chinese, PLA General Hospital, National Clinical Research Center for Infectious Diseases, 100 Xisihuan Road, Fengtai District, Beijing, 100039, China. fswang302@163.com.