Tang, Yaqi
Liu, Yuhai
Du, Zhanhui
Wang, Zheqi
Pan, Silin
Funding for this research was provided by:
National Natural Science Fund of China (81970249)
Qingdao Science and Technology Plan (20-3-4-47-nsh)
Article History
Received: 11 September 2023
Accepted: 31 January 2024
First Online: 5 March 2024
Declarations
:
: The study protocol conforms to the ethical guidelines of the 1975 Declaration of Helsinki and has been approved and informed by the institutional review board of the ethics committee of the Qingdao Women and Children’s Hospital. Informed consent was obtained from the children’s parents through telephone follow-up. Confidentiality of the information was secured throughout the study process. Furthermore, the collected data were anonymous.
: Not applicable.
: The authors declare no competing interests.