1. Veterinary Ophthalmology, Equine Clinic, Vetsuisse Faculty Zurich, Zurich, Switzerland.
2. Department of Ophthalmology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.
3. Center for Applied Biotechnology and Molecular Medicine, University of Zurich, Zurich, Switzerland.
4. Veterinary Pathology, Vetsuisse Faculty Zurich, Zurich, Switzerland.
5. Private Practice, Hospital Veterinario Puchol, Madrid, Spain.