1. School of Biosciences and Veterinary Medicine, University of Camerino, Via Circonvallazione 93/95-62024, Matelica (MC), Italy
2. Department of Veterinary Science, University of Turin, Largo Braccini 2-10095, Grugliasco (TO), Italy
3. Department of Veterinary Medicine, University of Milan, Via dell’Università 6-26900, Lodi (LO), Italy