Funding for this research was provided by:
University Nursing Program for Young Scholars with Creative Talents in Heilongjiang Province (UNPYSCT-2018179)
Harbin Normal University (XKB201401)
Article History
Received: 1 April 2019
Accepted: 7 September 2019
First Online: 8 October 2019
Compliance with ethical standards
:
: The author(s) declare that they have no competing interests.