1. Department of Public Health and Primary Care, Centre Environment & Health, KU Leuven, Leuven, Belgium;
2. Division of Environmental Epidemiology, Institute for Risk Assessment Sciences, Utrecht University, Utrecht, The Netherlands;
3. TNO, Netherlands Organisation for Applied Scientific Research, Zeist, The Netherlands;
4. Occupational and Environmental Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD, USA;
5. Department of Forensic Medicine, Laboratory of Forensic Genetics and Molecular Archaeology, University Hospitals Leuven, Leuven, Belgium;
6. External Service for Prevention and Protection at Work, Idewe, Heverlee, Belgium