Wang, Jiao
Qian, Xin
Gao, Qiang
Lv, Chunmei
Xu, Jie
Jin, Hongbo http://orcid.org/0000-0001-8988-9245
Zhu, Hui
Funding for this research was provided by:
Chinese National Natural Science Foundation (81571957)
Health and Family Planning Commission of Heilongjiang Province (2016-168)
the Fundamental Research Funds for the Provincial Universitie
Article History
Received: 10 December 2017
Accepted: 23 May 2018
First Online: 21 June 2018
Ethics approval and consent to participate
: Not applicable.
: The authors declare that they have no competing interests.
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