1. School of Nursing, Capital Medical University, Beijing, China
2. Manitoba Palliative Care Research Unit, CancerCare Manitoba, Winnipeg, MB, Canada
3. Department of Psychiatry, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB, Canada
4. Rady Faculty of Health Sciences, College of Nursing, University of Manitoba, Winnipeg, MB, Canada
5. University of Central Lancashire, Preston, UK