Funding for this research was provided by:
Hunan Provincial Science and Technology Department Science and Technology Innovation Platform and Talent Plan (2017TP1004)
Received: 27 November 2018
Accepted: 28 August 2019
First Online: 4 September 2019
Ethics approval and consent to participate
: Ethics approval was obtained from the Ethics Committee of the Xiangya Nursing School, Central South University (Grant No.2017028). Written informed consent was obtained from all patients taking part in face-to-face interviews.
: Not applicable.
: The authors declare that they have no competing interests.