Su, Qiang https://orcid.org/0000-0003-3230-2882
Zhang, Shikun
Hu, Mei
Wang, Qiaomei
Liu, Na
Shen, Haiping
Zhang, Yiping
Zhang, Man
Funding for this research was provided by:
Chinese Association of Maternal and Child Health Studies (AMCHS-2014-03)
National Key R&D Plan (2016YFC1000702)
Article History
Received: 30 April 2018
Accepted: 10 August 2018
First Online: 25 August 2018
Compliance with Ethical Standards
:
: The authors declare that they have no competing interests.