1. Key Laboratory of Medical Molecular Virology of Ministries of Education & Health, Shanghai Medical College & Institute of Medical Microbiology, Fudan University, Shanghai 200032, China.
2. Key Laboratory of Medical Molecular Virology of Ministries of Education & Health, Shanghai Medical College & Institute of Medical Microbiology, Fudan University, Shanghai 200032, China
3. The Lindsley F Kimball Research Institute, The New York Blood Center, New York, NY 10065, USA