1 Department of Infectious Diseases, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China.
2 Department of Infectious Diseases, Suqian People's Hospital of Nanjing Drum Tower Hospital Group, Suqian, China.
3 Department of Infectious Diseases, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China. Electronic address: dr.wu@nju.edu.cn.