1. The Wellcome-Wolfson Institute for Experimental Medicine; Queen's University Belfast; Belfast UK
2. Institute of Applied Health Research; University of Birmingham; Birmingham UK
3. Cochrane Eyes and Vision; Queen's University Belfast; Belfast UK
4. Effective Evidence LLP; Waterlooville UK
5. Cardiff University; Cardiff UK
6. Centre for Public Health; Queen's University Belfast; Belfast UK
7. Centre for Applied Vision Research, School of Health Sciences; City University of London; London UK
8. Wellcome-Wolfson Institute for Experimental Medicine; Queen's University Belfast; Belfast UK