[1] Univ Padua, Dept Comparat Biomed & Food Sci, I-35020 Agripolis Legnaro, PD, Italy
[2] Univ Milan, Dept Anim Pathol Publ Hlth & Vet Hyg, Fac Vet Med, I-20133 Milan, Italy
[3] Univ Turin, Dept Anim Pathol, Fac Vet Med, I-10095 Grugliasco, TO, Italy