Yin, Jiaming
Zhang, Hao
Zeng, Xiaoli
Yu, Jin
Wang, Huning
Jiang, Yiwei
Da, Dongxin
Li, Qiang
Zhang, Ying
Article History
Received: 3 April 2023
Accepted: 29 June 2023
First Online: 24 August 2023
Declarations
:
: Ethical approval was obtained by the Medical Ethics Committee of China Oral Health Foundation(2021-001). All methods were performed in accordance with the relevant guidelines and regulations. Parents/legal guardians of all the participants were informed of the purpose and process of the epidemiological investigation and signed informed consent for study participation in ethics approval and consent to participate.
: Not applicable.
: The authors declare that they have no competing interests.