Xu, Xuejing
Ma, Hongfang
Cheng, Shuqi
Xue, Jiang
Article History
Received: 20 April 2023
Accepted: 17 February 2024
First Online: 8 March 2024
Declarations
:
: Written informed consent was obtained from all enrolled infant's parents. This research was performed in line with the principles of the Declaration of Helsinki and was approved by the Institutional Review Board of the Second Hospital of Shandong University.
: Not applicable.
: The authors declare no competing interests.