Funding for this research was provided by:
the State Key Program of National Natural Science Foundation of China (No.81630027)
the National Natural Science Foundation of China (No.81571215)
Received: 25 September 2019
Accepted: 21 November 2019
First Online: 3 January 2020
Ethics approval and consent to participate
: All the animal experiments were carried out according to the Guide for the Care and Use of Laboratory Animals published by the U.S. National Institutes of Health (National Institutes of Health Publication No. 85–23, revised 1996) and was approved by the Ethics Committee of the Fourth Military Medical University (TDLL2017-03-190).
: Not applicable.
: The authors declare that they have no competing interests.