1. Uveitis Service, Moorfields Eye Hospital, London, England 2Department of Ophthalmology, Royal Surrey County Hospital, Guildford, England 3Institute of Ophthalmology, University College of London, London, England
2. Uveitis Service, Moorfields Eye Hospital, London, England 2Department of Ophthalmology, Royal Surrey County Hospital, Guildford, England 4Division of Immunology and Inflammation, Faculty of Medicine, Imperial College London, London, England