1. Department of Microbiology & Infectious Disease Center, School of Basic Medical Science, Peking University Health Science Center, Beijing, People’s Republic of China
2. Senior Department of Infectious Diseases, The Fifth Medical Center of Chinese PLA General Hospital, National Clinical Research Center for Infectious Diseases, Beijing, People’s Republic of China
3. Peking University 302 Clinical Medical School, Beijing, People’s Republic of China
4. Nankai University Second People's Hospital, School of Medicine, Nankai University, Tianjin, People’s Republic of China
5. Center for Infectious Diseases, Beijing Youan Hospital, Capital Medical University, Beijing, People’s Republic of China
6. Clinical and Research Center of Infectious Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing, People’s Republic of China
7. Department of Immunology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, People’s Republic of China.