1. University of Chinese Academy of Sciences, Beijing, PR China
2. State Key Lab of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, PR China
3. School of Pharmacy, Anhui Medical University, Hefei 230022, PR China
4. Department of Infectious Diseases, The First Affiliated Hospital, Anhui Medical University, Hefei 230022, PR China
5. Institute of Virology, University Hospital of Essen, Essen, Germany