Liu, Chang
Zhang, Shuang
Zhang, Chenzheng
Tai, Baojun
Jiang, Han
Du, Minquan http://orcid.org/0000-0002-5043-9981
Article History
Received: 21 August 2020
Accepted: 25 January 2021
First Online: 6 February 2021
Ethics approval and consent to participate
: The research involved human participants but not human material was reviewed and approved by the Ethic Committee of the School and Hospital of Stomatology, Wuhan University (Approval no. HGGC-035). Informed consent was obtained from all respondents. Written informed consent for participation was not required for this study in accordance with the national legislation and the institutional requirements.
: Not applicable.
: The authors declare that they have no competing interests.