Received: 16 September 2020
Accepted: 4 May 2021
First Online: 13 May 2021
: The Ethics Committee of School of Health Care Management of Shandong University supported this research (ECSHCMSDU20190101). All the participants of this research provided their written informed consent prior to data collection and patient anonymity is preserved.
: Not applicable.
: The authors declare that they have no competing interests.