1. From the School of Optometry and Vision Sciences, Cardiff University, Cardiff, Wales, United Kingdom; the
2. Common Services Agency, Edinburgh, Scotland, United Kingdom;3Instituto Oftalmologico de Alicante, University Miguel Hernandez, Alicante, Spain; the
3. Diabetes Centre, Stepping Hill Hospital, Stockport, United Kingdom; the
4. Department of Diabetes, Endocrinology and Lipid Metabolism, City Hospital, Birmingham, United Kingdom; and the
5. Department of Experimental Ophthalmology, St. Thomas’ Hospital, London, United Kingdom.