Fan, YH
Zhang, PL
Huang, YJ
Xie, C
Ai, T
Funding for this research was provided by:
2021 Chengdu Medical Research Project (2021342, 2021342, 2021342, 2021342, 2021342)
Article History
Received: 28 March 2023
Accepted: 2 June 2023
First Online: 23 June 2023
Declarations
:
: The study protocol was approved by the Chengdu Women’s and Children’s Central Hospital institutional review board. The included data were retrospective data from medical records and did not include any identifying information. Consent to participate is not applicable for this study according to Chengdu Women’s and Children’s Central Hospital institutional review board. All the procedures were followed in accordance with Declaration of Helsinki under the Ethics approval and consent to participate heading.
: No identifiable patient data or identified individual responses are used in this publication.
: All authors declare that they have no competing interests.