1. Joint Influenza Research Centre [Shantou University Medical College (SUMC)/University of Hong Kong (HKU)], Shantou University, Shantou, PR China.
2. State Key Laboratory of Emerging Infectious Diseases (HKU-Shenzhen Branch), Shenzhen Third People’s Hospital, Shenzhen, PR China.
3. State Key Laboratory of Emerging Infectious Diseases/Centre of Influenza Research, School of Public Health, The University of Hong Kong, Hong Kong SAR, PR China.
4. National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Key Laboratory for Medical Virology, National Health and Family Planning Commission, Beijing, PR China.
5. Joint Vaccine Research Centre [SUMC/University Health Network (UHN)], Shantou University Medical College, Shantou, PR China.
6. University Health Network, Toronto, Ontario, Canada.
7. University of Toronto, Toronto, Ontario, Canada.
8. Division of Virology, Department of Infectious Diseases, St. Jude Children’s Research Hospital, Memphis, TN, USA.