Text and Data Mining valid from 2020-01-03
Received: 21 June 2019
Accepted: 27 December 2019
First Online: 3 January 2020
Ethics approval and consent to participate
: Ethical approval of this study was obtained from the West China Hospital of Sichuan University Biomedical Research Ethics Committee (ethics number: 2018-554). Nurses who enrolled in the study were informed of the purpose and significance of this research by verbally and in writing, which were approved by the West China Hospital of Sichuan University Biomedical Research Ethics Committee. Participants voluntarily and anonymously participated in this study. All data collected were confidential and used only by this research study.
: Not applicable.
: The authors declare that they have no competing interests.