Zhu, Jiang
Hua, Xueying
Yang, Ting
Guo, Min
Li, Qiu
Xiao, Lu
Li, Ling
Chen, Jie
Li, Tingyu http://orcid.org/0000-0002-1940-7076
Funding for this research was provided by:
National Natural Science Foundation of China (81771223, 81770526)
Science and Technology Planning Project of Guangdong Province (2018B030335001)
Article History
Accepted: 2 May 2021
First Online: 14 July 2021
Declarations
:
: The authors declare that they have no competing interests.
: Participation in this research was voluntary. Parents signed written informed consent forms and were willing to let their children participate in the study. The study protocol was approved by the institutional review board of Children’s Hospital, Chongqing Medical University. This cross-sectional case-control study was based on a clinical trial which was registered in the Chinese Clinical Trial Registry (ChiCTR; registration number: ChiCTR-ROC-14005442).
: Not applicable.