Ma, Yanning
Li, Song
Article History
Received: 4 October 2020
Accepted: 28 February 2021
First Online: 10 March 2021
Ethics approval and consent to participate
: This study was approved by the ethics committee of School of Stomatology, Capital Medical University. (No. CMUSH-IRB-KJ-PJ-2020-11) Written informed consent was obtained from all subjects.
: Not applicable.
: The authors declare that they have no competing interests.