1. ASLTO3 Department of Prevention – Veterinary Service, ITALY
2. Department of Economics, Management and Statistics, University of Milano-Bicocca, via Bicocca degli Arcimboldi 8, 20126 Milano, ITALY
3. Department of Veterinary Science, University of Torino, L.go P. Braccini 2, 10095 Grugliasco (TO), ITALY