Yang, Xiuqin http://orcid.org/0000-0002-6618-6675
Jing, Xiaoyan http://orcid.org/0000-0003-3296-4958
Song, Yanfang http://orcid.org/0000-0002-9093-715X
Zhang, Caixia http://orcid.org/0000-0003-3975-9543
Funding for this research was provided by:
Scientific Research Foundation of Heilongjiang Provincial Education Department (12541014)
Foundation for Improving Innovative Capability of Scientific Institutions, Heilongjiang (YC2016D001)
Article History
Received: 6 October 2017
Accepted: 2 April 2018
First Online: 6 April 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
Free to read: This content has been made available to all.