1. Department of Health, Animal Science and Food Safety, University of Milan, Milan, Italy
2. DIMEVET-Department of Veterinary Medicine, School of Veterinary Medicine, Milano, Italy
3. Department of Clinical Sciences and Community Health Laboratory of Medical Statistics, Epidemiology and Biometry G. A. Maccacaro, University of Milan, Milan, Italy
4. Unit of Medical Statistics, Biometry and Bioinformatics, Fondazione IRCSS Istituto Nazionale Tumori di Milano, Milan, Italy
5. Veterinary Food Safety Consultants, Fish Market, Milan, Italy
6. National Health Service, ATS Veterinary Service, Milano, MI, Italy