Funding for this research was provided by:
Zhejiang Science and Technology Public Welfare Project (2013c33108)
Hangzhou Biosan Biochemical Technologirs Co, Ltd
Received: 16 October 2017
Accepted: 25 September 2018
First Online: 22 February 2019
Ethics approval and consent to participate
: The study protocol was reviewed and approved by the ethics committee of the First Affiliated Hospital of Jiaxing University. All participating pregnant women provided signed informed consent.
: Not applicable.
: The authors declare that they have competing interest.
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