Funding for this research was provided by:
Key Technologies Research and Development Program (2018YFC2002000)
Science and Technology Commission of Shanghai Municipality (15411965300)
Shanghai Municipal Population and Family Planning Commission (201540067)
Shanghai Shen Kang Hospital Development Center (16CR3063B)
Article History
Received: 7 October 2019
Accepted: 13 January 2020
First Online: 22 January 2020
Ethics approval and consent to participate
: The study was approved by the ethics committee of Huadong Hospital affiliated to Fudan University and the reference number was IRB20180074. This trial was registered atExternalRef removed(ChiCTR1900024220). Written consents to participate were obtained from all participants after enrollment.
: Not applicable.
: The authors declare that they have no competing interests.