Funding for this research was provided by:
national natural science foundation of china (31801207)
Article History
Received: 18 July 2021
Accepted: 18 August 2021
First Online: 7 September 2021
Declarations
:
: The Ethics Committee of Tongde Hospital of Zhejiang Province approved all the protocols of the study (trial registration No. 2019025). All participants provided written informed consent for the use of placental villus tissues and blood samples.
: The author declares that all work described here has not been published before and that its publication has been approved by all co-authors.
: The authors declare no potential conflicts of interests.