1. Robinson Research Institute, The University of Adelaide, Frome Rd, Adelaide SA 5000, Australia
2. School of Public Health and Social Work, Queensland University of Technology, 2 George St, Brisbane City QLD 4000, Australia
3. Department of Nursing, Faculty of Health Sciences, Open University of Sri Lanka, Nawala, Nugegoda 11222, Sri Lanka
4. Faculty of Nursing, University of Alberta, 116 St & 85 Ave, Edmonton, AB T6G 2R3, Canada