1. MOE/MOH Key Laboratory of Medical Molecular Virology, Shanghai Medical College and Institute of Medical Microbiology, Fudan University, Shanghai 200032, China
2. Lindsley F. Kimball Research Institute, New York Blood Center, New York, NY 10065, USA
3. Department of Medical Microbiology and Immunology, School of Basic Medicine, Dali University, Dali 671000, China