Fu, Aicun
Stapleton, Fiona
Wei, Li
Wang, Weiqun
Zhao, Bingxin
Watt, Kathleen
Yu, Shiao
Cui, Can
Lyu, Yong
Funding for this research was provided by:
Medical Science and Technology Research Project of Henan Health Commission (201602073)
Key R & D and Promotion Project of Henan Science and Technology Department (201801591)
Henan overseas study project of health and family planning technology (2018038)
Key Scientific Research Project of Universities of Henan Education Department (19A320066)
Article History
Received: 1 December 2020
Accepted: 8 April 2021
First Online: 3 June 2021
Competing interests
: The authors declare no competing interests.