1. Statens Serum Institut, Copenhagen, Denmark
2. Scientific Institute of Public Health, Brussels, Belgium
3. National Institute for Health Devlopment, Tallinn, Estonia
4. National Institute for Health and Welfare, Helsinki, Finland
5. French Institute for Public Health Surveillance (Institut de Veille Sanitaire, InVS), Saint-Maurice, France
6. Hellenic Centre for Disease Control and Prevention, Athens, Greece
7. National Institute of Environmental Health, Budapest, Hungary
8. National Institute of Public Health and The Environment (RIVM), the Netherlands
9. Instituto Nacional de Saúde Dr. Ricardo Jorge, Lisbon, Portugal
10. National Centre of Epidemiology; CIBER Epidemiología y Salud Pública (CIBERESP) Institute of Health Carlos III, Madrid, Spain
11. The Public Health Agency of Sweden, Stockholm, Sweden
12. Federal Statistical Office, Neuchâtel, Switzerland
13. Public Health England, London, United Kingdom
14. Health Protection Scotland, Glasgow, United Kingdom