Funding for this research was provided by:
the Science and Technology Innovation Action Plan Program of Shanghai (18411953800)
Shanghai Shen Kang Hospital Development Centre Municipal Hospital New Frontier Technology Joint Project (SHDC12017105)
Received: 7 July 2020
Accepted: 10 November 2020
First Online: 23 November 2020
Compliance with ethical standards
: The study protocol was approved by the Ethics Committee of Human Subject Research of the Obstetrics and Gynecology Hospital, Fudan University.
: The authors declare that they have no conflict of interest.
: Informed consents were obtained from all individual participants included in the study.