1. Faculty of Health Care Jesenice, Spodnji Plavž 3, 4270 Jesenice, Slovenia
2. Institute of Care and Practice Improvement, School of Health, Nursing and Midwifery, University of the West of Scotland, Hamilton, ML3OBA, Scotland
3. Faculty of Health Sciences, University of Alicante, Spain, Carretera de San Vicente del Raspeig s/n 03690 San Vicente del Raspeig, Alicante, Spain
4. Anaesthesia & Intensive Care Medicine, Royal Alexandra Hospital, Corsebar Road, Paisley, PA2 9PN, Scotland