1. Primary Care and Interventions Unit, Public Health England, 4th Floor, Twyver House, Gloucester GL1 1DQ, UK
2. Nice University Hospital, Nice, France
3. National Food Chain Safety Office, Budapest, Hungary
4. University of Lisbon, Lisboa, Portugal
5. Primary Care and Interventions Unit, Public Health England, Gloucester, UK
6. Universidade Católica Portuguesa, Lisboa, Portugal
7. National School of Public Health, University of West Attica, Egaleo, Attica, Greece