1. Department of Nursing and Midwifery, University of Stirling, Old Perth Road, Inverness, UK
2. Highland Heartbeat Centre, Cardiac Unit, Raigmore Hospital, Inverness, UK
3. Frontier Science (Scotland) Ltd., Grampian View, Kincraig, Inverness-shire, UK
4. School of Nursing and Midwifery, Australian Catholic University, Melbourne Campus, Australia