1. Department of Hygiene and Epidemiology, University of Athens Medical School, Athens, Greece
2. Harvard School of Public Health, Boston, Massachusetts, USA
3. Community Health Sciences, St. George’s, University of London, London, United Kingdom
4. Institute of Social and Preventive Medicine, University of Basel, Basel, Switzerland
5. Department of Public Health and Clinical Medicine, Umea University, Umea, Sweden
6. Universita degli studi di Pisa, Pisa, Italy
7. Department of Epidemiology and Statistics, University of Groningen, Groningen, the Netherlands
8. Institute of Public Health, Department of Environmental Health, Ljubljana, Slovenia
9. Institute of Hygiene, Teplice, Czech Republic