1. Department of Food Security, Istituto Zooprofilattico Sperimentale della Sardegna, Sassari, Italy;
2. Department of Veterinary Medical Sciences, University of Bologna, Ozzano Emilia (BO), Italy;
3. Environment and Health Department, Istituto Superiore di Sanità, Rome, Italy;
4. Veterinary Public Health, Food Safety, and Nutrition Department, Istituto Superiore di Sanità, Rome, Italy