Huang, Xin-xin
Ou, Ping
Qian, Qin-fang
Huang, Yan
Article History
Received: 1 September 2021
Accepted: 30 November 2021
First Online: 10 December 2021
Declarations
:
: This study was conducted under the ethical principles of the Declaration of Helsinki. The study was approved by the Human Subjects Ethics Committee of Fujian Maternity and Child Healths Hospital (reference number HREC 2016-009). Parents were informed about the study’s purpose and content. A written informed consent was taken from the parents and caregivers. To ensure patient privacy, all participants' personal or sensitive information was marked with an alphabetic or numeric code. All authors are in agreement with the content of the manuscript.
: Not applicable.
: The authors declare that there is no conflict of interest.