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Authors
Zhang, Ping http://orcid.org/0000-0001-8364-2444
Sun, Yabing
Zhang, Chen
Yang, Yeping
Zhang, Linna
Wang, Ningling
Xu, Hong
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Funding
Funding for this research was provided by:
Natural Science Foundation of Shanghai (15ZR1444100, 16ZR1419500, 17411972800)
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Article History
Received: 27 June 2018
Accepted: 3 January 2019
First Online: 18 January 2019
Ethics approval and consent to participate
: The study was approved by the ethical review committee of the International Peace Maternity and Child Health Hospital (IPMCH).
: Consent was obtained from the patients for the publication of this report.
: The author declares that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
