Sun, Yaru
Liu, Ting
Chen, Junyu
Huang, Juan
Wang, Xin
Lu, Mingqin
Luo, Ying
Yang, Xiuling
Article History
Received: 13 September 2022
Accepted: 28 December 2022
First Online: 2 January 2023
Declarations
:
: All methods were carried out in accordance with relevant guidelines and regulations and the study was conducted in accordance with the Declaration of Helsinki. The study was approved by Affiliated Hospital of Qingdao University and Ethics Committee (QDU-HEC-2021176). Voluntary informed consent was obtained from the parents/caretakers of the children before participating in the study after an explanation of the nature and purpose of the study, the potential benefits and risks if any.
: Not applicable.
: The authors declare that they have no competing interests.