1. School of Medicine, Dentistry and Biomedical Sciences, Faculty of Medicine, Health and Life Sciences, Queen’s University Belfast University Road, Belfast, Northern Ireland
2. Royal Victoria Hospital, Centre for Public Health, Queen’s University BelfastInstitute of Clinical Sciences A, Belfast, Northern Ireland
3. School of Medicine, Dentistry and Biomedical Sciences, Queen’s University Belfast, Belfast, Northern Ireland
4. Centre for Medical Education, Queen's University Belfast, Belfast, Northern Ireland