Funding for this research was provided by:
National Natural Science Foundation of China (31571188, 31071012, 31570906)
Scientific Research Program of Shaanxi Provincial Education Department (18JK1197)
Natural Science Basic Research Plan in Shaanxi Province of China (2014JZ2-004)
Received: 19 April 2019
Accepted: 5 March 2020
First Online: 16 April 2020
: This study was approved by the Animal Care and Use Committee of the Fourth Military Medical University (approval number: 20170404).
: Not applicable.
: The authors declare that they have no competing interests.