1. Faculty of Nursing, University of Alberta, Edmonton, AB T6G 2R3, Canada
2. College of Nursing, University of Health Sciences, Dera Ghazi Khan 03222, Pakistan
3. Shaukat Khanum Memorial Cancer Hospital and Research Centre, Lahore 54780, Pakistan
4. Division of Nursing, Midwifery, and Social Work, The University of Manchester, Manchester M13 9PL, UK