Yuan, Haiming
Wang, Qingming
Zeng, Xiumei
He, Peiqing
Xu, Wanfang
Guo, Hongmei
Liu, Yanhui
Lin, Yangyang http://orcid.org/0000-0002-3350-4972
Funding for this research was provided by:
Dongguan Social Development Project (No. 202050715007220)
Article History
Received: 17 January 2022
Accepted: 23 March 2022
First Online: 4 April 2022
Declarations
:
: This study was approved by the Ethics Committee of Dongguan Maternal and Child Health Care Hospital. Written informed consent was obtained from the legal guardians for the publication of any potentially identifiable images or data included in this article.
: Consent to publish has been obtained from the guardians of all involved children.
: All the authors declare no competing interests.