Wang, Pingping
Zhang, Zhanjun
Fang, Kenan
Yao, Jin
Huang, Xiaorong
Lu, Shouting
Article History
Received: 13 January 2024
Accepted: 21 August 2024
First Online: 29 August 2024
Declarations
:
: This study was approved by the Ethics Committee of Luoyang Maternal and Child Health Hospital (LWOPN 224020802.0). The ethical approval waived the need for informed consent, being that this study was Retrospective Study. All data collected were stripped of patient identifiers, with no possibility to track the data to an individual person’s identity.
: Not applicable.
: The authors declare no competing interests.