1. Key Laboratory of Biotechnology and Bioengineering of State Ethnic Affairs Commission, Biomedical Research Center, Northwest Minzu University, Lanzhou, China
2. School of Stomatology, Lanzhou University, Lanzhou, China
3. National Engineering Technology Research Center for Combined Vaccines, Wuhan, China
4. Wuhan Institute of Biological Products Co, Ltd, Wuhan, China
5. China National Biotech Group Company Limited, Beijing, China