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Authors
Wang, Xiangyu
Zhang, Huaping
Zhang, Pengfu
Hao, Shulan
Yang, Xi
Zhou, Xin https://orcid.org/0000-0001-8723-5168
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Funding
Funding for this research was provided by:
the Natural Science Foundation of Shanxi Province, China (201801D221387, 201901D111196)
Shanxi Scholarship Council of China (2020-074)
2020 Shanxi Province Graduate Education Reform (mandatory) research project China (2020YJJG135)
Follow-up to the Fourth National Oral Health Epidemiological Survey (201502002)
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Article History
Received: 24 June 2021
Accepted: 17 November 2021
First Online: 30 November 2021
Declarations
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: The authors declare that they have no competing interests.
: The study procedure conformed to the ethical guidelines of the Declaration of Helsinki, and the approval for the study was obtained from the Medical Ethics Committee of Shanxi Medical University.
: A written informed consent was obtained from patients enrolled.
: A written informed consent was obtained from patients to publish this paper.
