1. School of Health & Social Care, Edinburgh Napier University, Sighthill Campus, Edinburgh, UK
2. NHS Greater Glasgow and Clyde, Glasgow, UK
3. School of Nursing and Midwifery, Robert Gordon University, Aberdeen, UK
4. MRC/CSO Social and Public Health Sciences Unit, University of Glasgow, Glasgow, UK
5. Division of Diabetes & Nutritional Sciences, King’s College London, London, UK
6. Vaccine Preventable Diseases, Health Protection Scotland, Glasgow, UK