Funding for this research was provided by:
School of Stomatology, Peking University (PKUSSNCT-18A12)
Article History
Received: 2 June 2020
Accepted: 9 September 2020
First Online: 24 September 2020
Ethics approval and consent to participate
: Ethical approval of the study protocol was granted by the Biomedical Ethics Committee of Peking University Hospital of Stomatology (PKUSSIRB-201736080) in Beijing, China. All patients provided written informed consent to participate in this study.
: Not applicable.
: The authors declare that they have no competing interests.