1. Department of Ophthalmology; University of Copenhagen, Glostrup Hospital; Glostrup Denmark
2. Tierklinik Rostock; Rostock Germany
3. Department of Neuroscience and Pharmacology, Eye Pathology Institute; University of Copenhagen; Copenhagen Denmark
4. Friedrich-Löffler-Institut; Bundesforschungsinstitut fuer Tiergesundheit; Greifswald Germany