Funding for this research was provided by:
Fujian Provinical Health Technology Project (2016-1-73)
Natural Science Foundation of Fujian Province (2018Y0029)
Startup Fund for scientific research, Fujian Medical University (2016QH078)
Article History
Received: 4 October 2019
Accepted: 30 July 2020
First Online: 5 August 2020
Ethics approval and consent to participate
: This study was approved by the Research Ethics Committee of School and Hospital of Stomatology, Fujian Medical University (No. 2015-CX-31). Written informed consent was obtained from all participants in this study.
: Not applicable.
: The authors declare that they have no competing interests.