Funding for this research was provided by:
the National Key R&D Program of China (2018YFC1105302)
Received: 31 January 2021
Accepted: 10 May 2021
First Online: 2 August 2021
: The present study was approved by the Medical Ethics Committee of Peking University, Health Science Center, School of Stomatology (Approval Number: PKUSSIRB-201839155). Informed consent was obtained from all individuals before its inclusion in the study.
: Not applicable.
: Xiaojiao Fu, Ying Wang, Bo Chen, Jiehua Tian, Ye Lin, and Yu Zhang declare that they have no competing interests.