Zhang, Penghai
Liu, Yang
Fu, Changyu
Wang, Ce
Duan, Xingbang
Zou, Wenting
Zhao, Tianshu http://orcid.org/0000-0002-3915-546X
Funding for this research was provided by:
Heilongjiang Province Health and Family Planning Commission Research (2016-129)
Harbin Science and Technology Talent Innovation Fund Project (2016RAQXJ173)
Article History
Received: 28 August 2018
Accepted: 15 October 2018
First Online: 18 December 2018
Compliance with ethical standards
:
: The authors have no conflicts of interest to declare.