Funding for this research was provided by:
Natural Science Foundation of Heilongjiang Province (C2017032)
University Nursing Program for Young Scholars with Creative Talents in Heilongjiang Province
"Young Talents" Project of Northeast Agricultural University (17QC05)
Text and Data Mining valid from 2018-10-29
Received: 24 May 2018
Accepted: 15 October 2018
First Online: 29 October 2018
Change Date: 17 May 2019
Change Type: Correction
Change Details: This correction stands to correct erroneous funding shown in the original article.
Compliance with ethical standards
: All the authors declare that they have no conflict of interest.
: This article does not contain any studies with human participants or animals performed by any of the authors.
: Informed consent was obtained from all individual participants included in the study.