Funding for this research was provided by:
National Natural Science Foundation of China (81570942, 81670952)
Article History
Received: 13 June 2020
Accepted: 27 October 2020
First Online: 18 November 2020
Compliance with ethical standards
:
: The authors declare no conflict of interest.
: The work described has not been published before and it is not under consideration for publication anywhere else.
: Its publication has been approved by all co-authors.
: The study was approved by the Medical Research Ethics Committee of Hospital of Stomatology Wuhan University.