1. Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Department of Health and Human Services, Bethesda, Maryland, USA
2. Department of Health Risk Analysis and Toxicology, University of Maastricht, the Netherlands
3. Institut National de Santé Publique du Québec and Unité de recherche en santé publique, Centre Hospitalier Universitaire de Québec, Québec, Canada
4. Department of Health Services Research, Texas State University, San Marcos, Texas, USA
5. Department of Health Promotion Research, Southern Denmark University and Department of Public Health, University of Trnava, Slovakia
6. U.S. Geological Survey, Reston, Virginia, USA
7. Washington State Department of Health, Olympia, Washington, USA