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Authors
Liu, Xu
Hong, Hai-Fa
Zhang, Hai-Bo
Xu, Zhuo-Ming
Liu, Jin-Fen
Zhang, Hao https://orcid.org/0000-0002-0206-9066
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Funding
Funding for this research was provided by:
Program for Outstanding Medical Academic Leader in Shanghai
Key Discipline Gruop Project of Health and Family Planning Committee of Pudong New Area (PWZxq2017-14)
the Fund of The Shanghai Committee of Science and Technology (16411962300)
National Nature Science Foundation of China (81570281)
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Article History
Received: 15 November 2019
Accepted: 23 July 2020
First Online: 19 August 2020
Compliance with ethical standards
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: As a retrospective study, the study was approved by the Ethics Committee of SCMC, and parental written informed consent was obtained prior to the initiation of the study.
: No financial or nonfinancial benefits have been received or will be received from any party related directly or indirectly to the subject of this article.
