Qin, Yuandong
Zhang, Rui
Yuan, Bo
Xu, Ting
Chen, Hong
Yang, Yingming
Hu, Tao
Funding for this research was provided by:
Special Fund for Agro-scientific Research in the Public Interest (201502002)
Sichuan Provincial Natural Science Foundation of China (2018SZ0139)
Article History
Received: 5 October 2018
Accepted: 15 May 2019
First Online: 6 June 2019
Ethics approval and consent to participate
: Ethical approvals were obtained from the Stomatological Ethics Committee of the Chinese Stomatological Association and the Ethics Committee of West China Hospital of Stomatology, Sichuan University (Approval No. 2014–003),All parents were required to sign an informed consent form, the informed consent form contains the survey content about parents and children.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.