1. Jiangxi Provincial Key Laboratory of Preventive Medicine, School of Public Health, Nanchang University; Nanchang China
2. National Institute for Viral Disease Control and Prevention, China CDC, Key Laboratory for Medical Virology, National Health Commission of P. R. China; Beijing China
3. Shanghai Public Health Clinical Center, Fudan University; Shanghai China
4. Nanchang Center for Disease Control and Prevention; Nanchang Jiangxi China
5. State Key Laboratory of Respiratory Disease, Institute of Integration of Traditional and Western Medicine, Guangzhou Medical University; Guangzhou China