1. Doctoral student, School of Nursing and Midwifery; Queen's University of Belfast; Belfast Northern Ireland
2. Lecturer, School of Nursing and Midwifery; Queen's University of Belfast; Belfast Northern Ireland
3. Professor, School of Nursing and Midwifery; Queen's University of Belfast; Belfast Northern Ireland
4. Reader, Centre of Excellence for Public Health; School of Medicine, Dentistry and Biomedical Sciences; Belfast Northern Ireland