Wang, Xing
Liu, Haifeng
Hu, Zhihong
Zhang, Rufang
Gu, Zhujun
Lin, Kai
Feng, Yuling
Funding for this research was provided by:
Scientific Research Project of Shanghai Municipal Population and Family Planning Commission (201840341)
Scientific Research Project of Shanghai Municipal Health Bureau (20194Y0139)
Article History
Received: 11 May 2021
Accepted: 25 October 2021
First Online: 19 November 2021
Competing interests
: The authors declare no competing interests.