Funding for this research was provided by:
National Natural Science Foundation of China (No. 81771080)
National Natural Science Foundation of China (No. 81970949)
National Natural Science Foundation of China (No. 81371147)
State Key Laboratory of Oral Diseases (SKLOD) Open Fund (SKLOD2020OF01)
Article History
Received: 22 January 2020
Accepted: 25 April 2020
First Online: 24 May 2020
Ethics approval and consent to participate
: Not applicable.
: Not applicable.
: The authors declare that they have no competing interests.