Wu, Dong
Zhou, Lin
Lin, Jichao
Chen, Jiang
Huang, Wenxiu
Chen, Yonghui http://orcid.org/0000-0002-8962-2257
Funding for this research was provided by:
the National Natural Science Foundation of China (No.81771126)
Fujian provincial healthy and family planning commission program (No.2015-CX-30)
Science Foundation of Fujian Province (2019J01319)
Article History
Received: 27 September 2019
Accepted: 22 November 2019
First Online: 2 December 2019
Ethics approval and consent to participate
: The study protocol was evaluated and approved by the Institutional Ethics Committee of the School of Stomatology, Fujian Medical University (Ref. [2015] NO.103). All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. All patients provided written informed consent.
: Not applicable.
: The authors declare that they have no competing interests.