1. School of Nursing and Midwifery, University of Dundee, 11 Airlie Place, Dundee DD1 4HJ, UK,
2. School of Nursing and Midwifery, Queen's University Belfast, 50 Elmwood Avenue, Belfast BT9 6AZ, Northern Ireland
3. School of Nursing and Midwifery, University of Dundee, 11 Airlie Place, Dundee DD1 4HJ, UK