Sun, Yaoyao
Liu, Fei
Wang, Ying
Zhou, Mailin
Yang, Bei
Cao, Fenglin http://orcid.org/0000-0002-6292-6840
Article History
Received: 29 June 2020
Accepted: 12 January 2021
First Online: 31 March 2021
Declarations
:
: The authors declare that they have no conflict of interest.
: This study was performed in line with the principles of the Declaration of Helsinki. Approval was granted by the Ethics Committee of School of Nursing, Shandong University (Date: Sep-9-2016 /No. 2016-R-023).
: Informed consent was obtained from all individual participants included in the study.