1. Health Department, Environmental Health Center; Babes Bolyai University; Cluj-Napoca; Romania
2. Department of Environmental Epidemiology; National Institute of Environmental Health; Budapest; Hungary
3. Department of Environmental Health; Regional Authority of Public Health; Banska Bystrica; Slovakia
4. UMRESTTE, Department of Epidemiological Research and Survey in Transport; Work and Environment, University of Lyon 1; Lyon; France
5. Institute of Environmental Medicine; Karolinska Institutet; Stockholm; Sweden
6. Institut für Chemie-Analytische Chemie; Karl-Franzens-Universität; Graz; Austria
7. Division of Molecular Genetic Epidemiology; German Cancer Research Center; Heidelberg; Germany
8. Department of Social and Environmental Health Research; Public Health, London School of Hygiene and Tropical Medicine; London; United Kingdom