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Authors
Zhang, Hua-Le
Zheng, Liang-Hui
Cheng, Li-Chun
Liu, Zhao-Dong
Yu, Lu
Han, Qin
Miao, Geng-Yun
Yan, Jian-Ying https://orcid.org/0000-0003-4289-3444
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Article History
Received: 17 May 2020
Accepted: 3 September 2020
First Online: 15 September 2020
Ethics approval and consent to participate
: Ethical approval for this study was granted by the ethics committee of Fujian Provincial Maternity and Children’s Hospital. Permission to access the anonymized (non-identified) data was granted by the Fujian Provincial Maternity and Children’s Hospital Database steering committee.
: All data was anonymized, therefore individual consent for publication was not required.
: The authors declare that they have no competing interests.
