Xia, Yue
Wang, Lu
Article History
Received: 25 September 2021
Accepted: 7 December 2021
First Online: 15 March 2022
Declarations
:
: The experimental protocol was established, according to the ethical guidelines of the Helsinki Declaration and was approved by the Human Ethics Committee of Tianjin Stomatology Hospital. Written informed consent was obtained from the participants and their guardians.
: Not applicable.
: The authors declare that they have no competing interests.