1. Gloucestershire Retinal Research Group Cheltenham General Hospital Cheltenham UK
2. Nuffield Department of Clinical Neuroscience University of Oxford Oxford England
3. University of Gloucestershire Cheltenham England
4. Boehringer Ingelheim Pharmaceuticals, Inc. Ridgefield CT USA
5. Boehringer Ingelheim International GmBH Ingelheim Germany
6. Moorfields Eye Hospital London UK
7. Bristol Eye Hospital Bristol UK