Funding for this research was provided by:
National Natural Science Foundation of China (81970669)
Natural Science Foundation of Jilin Province (81670743)
Shanghai Municipal Population and Family Planning Commission (201740173)
Article History
Received: 12 August 2020
Accepted: 10 March 2021
First Online: 19 March 2021
Declarations
:
: The study protocol was approved by the ethics committee of Xinhua Hospital Affiliated with Shanghai Jiaotong University School of Medicine. All participants in the present analysis gave written informed consent before they participated in this study.
: Not applicable.
: The authors declare that they have no competing interests.