Funding for this research was provided by:
Talent Project of Zhejiang Association for Science and Technology (2018YCGC003)
Zhejiang Province Civil Policy Theory Research Plan (ZMYB201652)
Natural Science Foundation of Zhejiang Province (LQ15G030006)
Ministry of Education of China Youth Project of Humanities and Social Sciences (15YJC80024)
Received: 19 July 2019
Accepted: 26 May 2020
First Online: 10 June 2020
Ethics approval and consent to participate
: The study was approved by the medical ethical committee of Zhejiang Chinese Medical University. Signed parental consent for student participation was obtained. If the child did not live with their parents, the consent was obtained from their caregivers. Additionally, student verbal agreement to participate was obtained at the time of data collection.
: Not applicable.
: The authors declare that they have no competing interests.