1. School of Public Health, University of Alberta, 11405 87 Ave NW, Edmonton, AB T6G 1C9, Canada
2. Internationalization Staff Unit, Institutional Services Area, University of Trieste, Piazzale Europa, 1, 34127 Trieste, Italy
3. Area Science Park, Padriciano, 99, 34149 Trieste, Italy
4. Directorate General for Hygiene, Food Safety and Nutrition, Ministry of Health, Viale Giorgio Ribotta 5, 00144 Rome, Italy
5. Directorate General for Health Prevention, Ministry of Health, Viale Giorgio Ribotta 5, 00144 Rome, Italy
6. Department of Community Health Sciences, Cumming School of Medicine, University of Calgary, 3280 Hospital Drive, Calgary, AB T6G 1C9, Canada
7. Department Infectious Diseases, National Institute of Health, 00160 Rome, Italy