Funding for this research was provided by:
University Nursing Program for Young Scholars with Creative Talents in Heilongjiang Province (UNPYSCT-2017036)
Priority funding projects for Returned Scholars in Heilongjiang Province (2017QD0033)
China Postdoctoral Science Foundation (2017M621240)
Postdoctoral Science Foundation in Heilongjiang Province (LBH-Z17037)
Article History
Received: 7 February 2018
Accepted: 4 October 2020
First Online: 21 October 2020