Huang, Jinwei
Gan, Yena
Xu, He
Li, Nan
An, Na
Cai, Zhigang
Funding for this research was provided by:
The Education Project, Peking University School and Hospital of Stomatology (Grant No. 2019SZ04)
Article History
Received: 22 December 2022
Accepted: 15 March 2023
First Online: 2 April 2023
Declarations
:
: The study was performed following the Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) guidelines and in accordance with the Declaration of Helsinki. Participation was entirely voluntary and completely anonymous, thereby guaranteeing the confidentiality of the data obtained. Informed consent was included on the front page of the questionnaire, and completion of the questionnaire implied providing consent for study participation. The study was approved by the Ethics Committee of Peking University School and Hospital of Stomatology (PKUSSIRB-202056081).
: Not applicable.
: The authors declare that they have no competing interests.