1. State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology Beijing China
2. Fifth Medical Center of Chinese PLA General Hospital Beijing China
3. Changchun Veterinary Research Institute Chinese Academy of Agricultural Sciences Changchun China
4. Joint Medical Unit, Republic of Sierra Leone Armed Forces Freetown Sierra Leone
5. Department of Laboratorial Science and Technology School of Public Health Peking University Beijing China