Funding for this research was provided by:
the National key research and development project (2017YFC0211705)
the Education Commission of Chongqing Municipality (KJQN201900443)
the National Natural Science Foundation of China (81502826)
the Chongqing Medical University Funded Projects (CQMUNCP0204)
Article History
Received: 31 January 2021
Accepted: 15 April 2021
First Online: 4 May 2021
Declarations
:
: The Institutional Review Board of Children’s Hospital of Chongqing Medical University approved this study, and informed consent was written by all the subjects and parents. All the work was conducted under the ethical guidelines of the 1964 Declaration of Helsinki and its later amendments.
: All authors critically reviewed and approved the publication of the final paper.
: The authors declare that they have no competing interests.