1. Istituto Veterinario di Novara; S.P.9 Granozzo con Monticello Novara 28060 Italy
2. Department of Pathology, Hygiene and Veterinary Public Health; Università degli studi di Milano; Via Celoria 10 Milan 20133 Italy
3. Department of Animal Medicine, Production and Health; Università degli studi di Padova; Via 8 Febbraio 2 Padua 35122 Italy
4. The Clinic for Small Animal Internal Medicine; University of Zurich; Winterthurerstrasse 260 Zurich 8057 Switzerland
5. Studio Dermatologico Veterinario; Via G. Sismondi 62 Milan 20133 Italy
6. Laboratory of Anatomy and Confocal Microscopy; Department of Health, Animal Science and Food Safety; Università degli studi di Milano; Via Trentacoste 2 Milan 20134 Italy
7. Department of Dermatology & Cutaneous Surgery; Miller School of Medicine; University of Miami; 1295 NW 14th Street K - M Miami FL 33136 USA