Wang, Qin
Zhang, Jianming
Wang, Hui
Feng, Qing
Luo, Fuwei
Xie, Jiansheng
Funding for this research was provided by:
Shenzhen Science and Technology Innovation Commission (JCYJ20170413092818116)
Shenzhen Health and Family Planning Commission Research Project
Article History
Received: 14 January 2019
Revised: 24 July 2019
Accepted: 25 July 2019
First Online: 19 August 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.