1. Department of Veterinary Medicine and Animal Sciences, University of Milan, Via dell’Università 6, 26900 Lodi, Italy
2. Department of Veterinary Medicine, University of Sassari, Via Vienna 2, 07100 Sassari, Italy
3. School of Biosciences and Veterinary Medicine, University of Camerino, Via Circonvallazione 93/95, 62024 Matelica, Italy