Funding for this research was provided by:
The Development Project of Medicine and Health Science Technology of Shandong Province (2017WSB42001)
Article History
Accepted: 19 November 2021
First Online: 2 December 2021
Declarations
:
: The authors declare that they have no conflict of interest.
: The study was approved by the Medical Ethics Committee of School of Health Care Management, Shandong University (ECSHCMSDU20190103), and the research adhered to the tenets of the Declaration of Helsinki.
: Informed consent was obtained from all individual participants included in the study.