1. Department of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, 64100 Teramo, Italy
2. Department of Laboratory Medicine, Karolinska Institute, Stockholm, Sweden
3. Istituto Zooprofilattico Sperimentale dell'Abruzzo e Molise ‘G. Caporale’, Campo Boario, 64100 Teramo, Italy