1. Pet Dermatology Clinic Maple Grove Minnesota USA
2. Tierdermatologie Basel Münchenstein Switzerland
3. University of Thessaly, Clinic of Medicine, School of Veterinary Medicine Volos Greece
4. Department of Clinical Sciences, College of Veterinary Medicine North Carolina State University Raleigh North Carolina USA
5. Department of Veterinary Clinical Sciences, School of Veterinary Medicine Louisiana State University Baton Rouge Louisiana USA
6. Department of Small Animal Clinical Sciences College of Veterinary Medicine, University of Florida Gainesville Florida USA