Funding for this research was provided by:
National Natural Science Foundation of China (81401172, 81771532)
Special Fund for Clinical Medicine Scientific Research of Chinese Medical Association (16020180634)
Shanghai municipal medical and health discipline construction projects (2017ZZ02015)
Article History
Received: 29 March 2018
Accepted: 25 July 2018
First Online: 3 August 2018
Ethics approval and consent to participate
: The study was approved by the Institutional Ethical Review Board of Tongji University School of Medicine on the 18th March 2015 (Reference: TJUSM-2015-0318).Written informed consent was obtained from all patients and the study was approved by the Ethics Review Board of Shanghai First Maternity and Infant Hospital on 20th November 2015 (Reference: 2015-RM-1120).
: Not applicable.
: The authors declare no conflicts of interest.
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