Fan, Weihua
Liu, Conghua
Zhang, Yazhi
Yang, Zijing
Li, Jianbo
Huang, Shaohong
Funding for this research was provided by:
the Public Science and Technology Research Funds Project (2015)—the Fourth National Oral Health Survey (201502002)
the Clinical Research Startup Program of Southern Medical University by High-level University Construction Funding of Guangdong Provincial Department of Education (LC2017PY001)
Article History
Received: 24 February 2021
Accepted: 4 June 2021
First Online: 16 June 2021
Declarations
:
: The informed consent was in accordance with the Declaration of Helsinki and approved by the Stomatological Ethics Committee of the Chinese Stomatological Association on 9 July 2014 (Approval No.: 2014-003).
: Not applicable.
: The authors declare that they have no competing interests.