Yue, Zhaoguo
Liu, Qi
Zhang, Haidong
Yang, Jingwen
Hou, Jianxia
Article History
Received: 12 April 2020
Accepted: 16 January 2021
First Online: 28 January 2021
Ethics approval and consent to participate
: The study protocol and consent to participate were reviewed and approved by the Ethics Committee of Peking University Hospital and School of Stomatology (approval no. PKUSSIRB-201840191). The study protocol complies with the relevant SPIRIT Checklist (Additional file InternalRef removed).Informed consent will be obtained from all study participants.
: Not applicable.
: The authors have no competing interests to declare.