https://scholar.google.com/scholar_lookup?title=Dental+Caries+Status+and+Its+Associated+Factors+among+Schoolchildren+Aged+6–8+Years+in+Hangzhou,+China:+A+Cross-Sectional+Study&author=Chen,+Z.&author=Zhu,+J.&author=Zhao,+J.&author=Sun,+Z.&author=Zhu,+B.&author=Lu,+H.&author=Zheng,+Y.&publication_year=2023&journal=BMC+Oral+Health&volume=23&pages=94&doi=10.1186/s12903-023-02795-5&pmid=36788543