Zhang, Meng
Zhang, Xinyue
Zhang, Yuan
Li, Yanan
Shao, Chunchun
Xiong, Shijiang
Lan, Jing
Wang, Zhifeng
Funding for this research was provided by:
Key Technology Research and Development Program of Shandong (2019GSF108278)
Key Technology Research and Development Program of Shandong (2019GSF108184)
Article History
Received: 18 November 2019
Accepted: 2 April 2020
First Online: 12 May 2020
Ethics approval and consent to participate
: This study had been approved by the Ethics Committee of the Chinese Stomatological Association (NO.2014–003) and the signed informed consent was obtained from legal caregivers for all participants under 16 years old.
: Not applicable.
: The authors declare that they have no competing interests.