1. Occupational and Environmental Epidemiology Branch, Division of Cancer Epidemiology and Genetics, Department of Health and Human Services National Cancer Institute, National Institutes of Health Bethesda Maryland USA
2. University of Southern Maine, Muskie School of Public Service, Cutler Institute Augusta Maine USA
3. Maine Department of Health and Human Services Maine Center for Disease Control and Prevention, Division of Environmental and Community Health Augusta Maine USA
4. Formerly of the Occupational and Environmental Epidemiology Branch, Division of Cancer Epidemiology and Genetics, Department of Health and Human Services National Cancer Institute, National Institutes of Health Bethesda Maryland USA
5. Division of Health Surveillance Vermont Cancer Registry Burlington Vermont USA
6. Formerly of the Bureau of Public Health Statistics and Informatics Department of Health and Human Services Concord New Hampshire USA
7. Department of Epidemiology Geisel School of Medicine at Dartmouth Hanover New Hampshire USA
8. Formerly of the Maine Department of Health and Human Services Maine Cancer Registry Augusta Maine USA