Richard Gray1,2, Dan Bressington3,4, Martin Jones2, David R Thompson5. 1. School of Nursing and Midwifery, La Trobe University, Melbourne, Vic., Australia. 2. Academic Department of Rural Health, University of South Australia, Adelaide, SA, Australia. 3. School of Nursing, Hong Kong Polytechnic University, Hong Kong, Hong Kong. 4. School of Nursing and Midwifery, Charles Darwin University, Darwin, NT, Australia. 5. School of Nursing and Midwifery, Queens University Belfast, Belfast, UK.