Wang, Weihong
Xu, Lu
Bao, Zhenfei
Sun, Linyin
Hu, Chunyan
Zhou, Feng
Xu, Lei
Shi, Dingmei http://orcid.org/0000-0002-6199-2213
Funding for this research was provided by:
Health and Family Planning Commission of Zhejiang Province (201483560, 2016KYB257, 2017KY581)
Article History
Accepted: 1 March 2018
First Online: 14 March 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: All procedures performed in studies 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.
: Informed consent was obtained from all individual participants included in the study.