Cui, Panpan
Ping, Zhiguang
Wang, Panpan
Bie, Wenqian
Yeh, Chao Hsing
Gao, Xinyi
Chen, Yiyang
Dong, Shiqi
Chen, Changying http://orcid.org/0000-0003-2151-7351
Article History
Received: 20 May 2020
Accepted: 3 August 2020
First Online: 15 August 2020
Compliance with ethical standards
:
: The authors declare that they have no competing interest.
: The current study was part of an internal hospital project related to the improvement of the quality of end-of-life care; thus, it was exempt from the need for approval by Institutional Review Board of Zhengzhou University.
: We used retrospective and de-identified administrative data, and informed consent was not required.
: Not applicable.