Funding for this research was provided by:
Fundamental Research Funds for the Central Universities (lzujbky-2020-50)
Natural Science Foundation of Gansu Province (20JR10RA636)
Received: 30 September 2020
Accepted: 23 January 2021
First Online: 8 February 2021
Ethics approval and consent to participate
: This study protocol was approved by the Research Ethics Committee and the Animal Caring and Using Committee of Lanzhou University.
: Not applicable.
: The authors declare that they have no competing interests.