Funding for this research was provided by:
National Natural Science Foundation of China (81670566, 81872359)
Fundamental Research Funds for the Central Universities (021414380449)
Received: 20 September 2019
Accepted: 13 November 2019
First Online: 12 December 2019
Ethics approval and consent to participate
: The animal experiments were approved by the Institutional Animal Care and Use Committee of Nanjing University, China, based on the NIH Guide for the Care and Use of Laboratory Animals.
: Not applicable.
: The authors declare that they have no competing interests.