Funding for this research was provided by:
National Natural Science Foundation of China (81470718, 81100736 and 81771051)
Received: 26 July 2019
Accepted: 21 November 2019
First Online: 3 December 2019
Ethics approval and consent to participate
: All the animals in this study were treated according to internationally recognized guidelines on animal welfare and with the approval of the Medical Ethics Committee of the Hospital of Stomatology of Wuhan University (approval number S07915050a, date: 2015-05-15).
: Not applicable.
: The authors declare that they have no competing interests.