Funding for this research was provided by:
National Natural Science Foundation of China (31170884)
National Science and Technology Key Project on Major Infectious Diseases (2017ZX10303401, BWS17J034)
Science Fund of Jiangsu Province, China (BE2018617)
Received: 14 July 2019
Accepted: 24 September 2019
First Online: 7 November 2019
Ethics approval and consent to participate
: All experiments involving animals were performed in accordance with the protocols approved by the Animal Care and Use Committee of the Nanjing Medical University, China.
: Not applicable.
: The authors declare that they have no competing interests.