Tang, Fang
Wang, Jian
Nicholas, Stephen
Qian, Dongfu
Liu, Rugang http://orcid.org/0000-0002-4270-9507
Funding for this research was provided by:
National Natural Science Foundation of China (71904089, 71804093)
NHC Key Laboratory of Health Economics and Policy Research (NHC-HEPR2019006)
Academic Promotion Programme of Shandong First Medical University (2019LJ005 & 2019QL013)
Article History
Received: 6 December 2020
Accepted: 15 February 2021
First Online: 22 February 2021
Ethics approval and consent to participate
: The study was approved by the Ethics Committee of Shandong Provincial Qianfoshan Hospital and written consent was obtained from all eligible participants. The study was carried out in accordance with the principles of the Declaration of Helsinki.
: Not applicable.
: The authors declare no conflict of interest.