1. Independent Consultant; London UK
2. Public Health England; London UK
3. Independent Consultant; New York USA
4. London School of Hygiene and Tropical Medicine; London UK
5. European Centre for Disease Prevention and Control; Stockholm Sweden
6. INSERM French Institute of Health and Medical Research; Paris France
7. Belgian Scientific Institute for Public Health; Brussels Belgium
8. Robert Koch Institute; Berlin Germany
9. National Institute for Public Health; Prague Czech Republic