Mao, Junjun
Qiu, Xiaoyan
Qin, Weiwei
Xu, Luyang
Zhang, Ming
Zhong, Mingkang
Funding for this research was provided by:
Shanghai Municipal Population and Family Planning Commission (No. shslczdzk06502, No. 2016ZB0301-01)
Article History
Received: 3 May 2021
Accepted: 20 September 2021
First Online: 8 November 2021
Declarations
:
: There are no financial relationships with any organizations that might have an interest in the submitted work in the previous 3 years, and no other relationships or activities that could appear to have influenced the submitted work. All authors have no conflicts of interest to declare.
: All procedures involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.