1. Department of Veterinary Medicine, Zhejiang University, Hangzhou, China
2. Key Laboratory of Medical Molecular Virology (MOE/NHC/CAMS), School of Basic Medical Sciences, Shanghai Medical College, Shanghai Institute of Infectious Disease and Biosecurity, Fudan University, China
3. Novoprotein Scientific Inc., Shanghai, China
4. Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China