1 University of Padova, Department of Comparative Biomedicine and Food Hygiene, Agripolis, Viale dell'Università, 16, 35020 Legnaro, Padova, Italy. Electronic address: sandro.mazzariol@unipd.it.
2 University of Siena, Department of Physical Sciences, Earth and Environment, Via Mattioli, 4, 53100 Siena, Italy. Electronic address: letizia.marsili@unisi.it.
3 University of Teramo, Faculty of Veterinary Medicine, Località Piano d'Accio, 64100 Teramo, Italy. Electronic address: gdiguardo@unite.it.