1. Royal Victoria Infirmary; Department of Ophthalmology; Claremont Wing Queen Victoria Road Newcastle upon Tyne UK NE1 4LP
2. Mayo Clinic; Ophthalmology Research; Guggenheim 9 200 1st St. SW Rochester Minnesota USA 55905
3. City University; Department of Optometry & Visual Science; R466, Tait Building Northampton Square London UK EC1V 0HB