1. School of Health and Life Sciences Glasgow Caledonian University Glasgow UK
2. Public Health Scotland Glasgow UK
3. Division of Epidemiology and Public Health University of Nottingham Nottingham UK
4. Division of Molecular and Clinical Medicine School of Medicine University of Dundee Dundee UK
5. Royal Infirmary of Edinburgh Edinburgh UK
6. Aberdeen Royal Infirmary Aberdeen UK
7. Queen Elizabeth University Hospital Glasgow UK
8. Glasgow Royal Infirmary Glasgow UK
9. British Columbia Centre for Disease Control Vancouver BC Canada
10. School of Population and Public Health Faculty of Medicine University of British Columbia Vancouver BC Canada