1. Department of Veterinary Clinical Sciences, Faculty of Health and Medical Sciences University of Copenhagen Copenhagen Denmark
2. Anicura Aarhus Veterinary Hospital Aarhus Denmark
3. Haslev Veterinary Clinic Haslev Denmark
4. Departmnent of Biomedical Science, Core Facility for Integrated Microscopy, Faculty of Health and Medical Sciences University of Copenhagen Copenhagen Denmark
5. Department of Clinical Medicine, Faculty of Health and Medical Sciences University of Copenhagen Copenhagen Denmark
6. Comparative Ophthalmology, Department of Clinical Sciences, College of Veterinary Medicine North Carolina State University Raleigh North Carolina USA