1. Institute of Animal Pathology, University of Berne, Laenggassstrasse 122, Postfach, CH‐3001 Berne, Switzerland
2. California Dermatopathology Service and IDEXX Veterinary Services, West Sacramento, CA 95605, USA
3. Studio Dermatologico Veterinario, Via Sismondi 62, 20133 Milano, Italy