1. Department of Molecular Genetic Epidemiology, German Cancer Research Center (DKFZ) Im Neuenheimer Feld 580, 69120 Heidelberg Germany
2. Medizinische Fakultät Universität Heidelberg Im Neuenheimer Feld 672, 69120 Heidelberg
3. Department of Molecular Oncology, Cancer Research Institute, Biomedical Research Center Slovak Academy of Sciences Dubravska cesta 9, 84505 Bratislava Slovakia
4. Department of Molecular Biology of Cancer Institute of Experimental Medicine, The Czech Academy of Sciences Videnska 1083, 142 00 Prague Czech Republic
5. Institute of Biology and Medical Genetics, First Faculty of Medicine Charles University Albertov 4, 128 00 Prague Czech Republic
6. Biomedical Centre, Faculty of Medicine in Pilsen Charles University in Prague Pilsen Czech Republic
7. Department of Medical Genetics, Third Faculty of Medicine Charles University Prague Czech Republic
8. Department of Biology, Faculty of Medicine Slovak Medical University Limbova 12, 833 03 Bratislava Slovakia
9. Institute of Human Genetics, University of Bonn D‐53127 Bonn Germany
10. Division of Medical Genetics, Department of Biomedicine University of Basel 4003 Basel Switzerland
11. Department of Genomics, Life & Brain Center University of Bonn D‐53127 Bonn Germany
12. Health Effects Laboratory, Department of Environmental Chemistry NILU‐Norwegian Institute for Air Research Instituttveien 18, 2007 Kjeller Norway
13. Clinic of Occupational Medicine and Toxicology, Jessenius Faculty of Medicine in Martin Comenius University in Bratislava and University Hospital Martin Kollarova 2, 03601 Martin Slovakia
14. Center of Primary Health Care Research, Clinical Research Center Lund University 20502 Malmö Sweden