Chen, Weiting
Zhang, Kaili
Liu, Dongxu
Article History
Received: 29 December 2020
Accepted: 5 March 2021
First Online: 22 March 2021
Declarations
:
: All procedures performed in studies involving human participants were approved by the Research Ethics Committee of Shandong University Dental School (Protocol No. 20201204) and were in accordance with the Declaration of Helsinki for research involving human subjects. The study was explained, and written informed consent was obtained from the inpatients.
: Not applicable.
: The authors declare that they have no competing interests.