Funding for this research was provided by:
The University Nursing Program for Young Scholars with Creative Talents in Heilongjiang Province (UNPYSCT-2016002)
The International Postdoctoral Exchange Fellowship Program (No.20130006)
Article History
Received: 4 January 2018
Accepted: 25 April 2018
First Online: 15 May 2018
Compliance with ethical standards
: The experiments were approved by the Institutional Animal Care and Use Committee of Northeast Agricultural University (Harbin, China).