1. City University of London; Centre for Applied Vision Research, School of Health Sciences; Northampton Square London UK EC1V 0HB
2. City University London; School of Health Sciences, Centre for Health Services Research; Northampton Square London UK EC1V 0HB
3. University of St Andrews; School of Medicine, Medical and Biological Sciences Building; Fife UK KY16 9TF
4. Kings College London; Department of Primary Care & Public Health Sciences; 4th Floor, Addison House Guy's Campus London UK SE1 1UL
5. Newcastle University; National Institute for Health Research (NIHR) Innovation Observatory; Times Central offices, 4th Floor, Gallowgate Newcastle upon Tyne UK NE1 4BF
6. Newcastle University; Institute of Health & Society; Newcastle upon Tyne UK NE2 4AX
7. Queen's University Belfast; Centre for Public Health; Belfast UK BT12 6BA
8. Ottawa Hospital Research Institute; Clinical Epidemiology Program; 501 Smyth Road Ottawa Ontario Canada K1H 8L6
9. Women's College Hospital; Department of Family and Community Medicine; 76 Grenville Street Toronto ON Canada M5S 1B2
10. University of Ottawa; Department of Medicine; Ottawa ON Canada