1. Department of Clinical Veterinary Medicine; Clinic for Swine; Vetsuisse Faculty; University of Bern; Bremgartenstrasse 109A 3012 Bern Switzerland
2. Institute of Animal Pathology; Vetsuisse Faculty; University of Bern; PO Box 8466 3001 Bern Switzerland
3. DermFocus; Vetsuisse Faculty; University of Bern; PO Box 8466 3001 Bern Switzerland
4. Division of Clinical Dermatology; Department of Clinical Veterinary Medicine; Vetsuisse Faculty; University of Bern; PO Box 8466 3001 Bern Switzerland
5. Department of Clinical Sciences; College of Veterinary Medicine; North Carolina State University; College of Veterinary Medicine; 1060 William Moore Drive Raleigh NC 27607 USA