1. Clinical and Genetic Epidemiology Research Branch, Epidemiology and Genetics
Research Program, Division of Cancer Control and Population Sciences, National
Cancer Institute, National Institutes of Health, Department
of Health and Human Services, Rockville, Maryland, USA
2. Department of Preventive Medicine and Biometrics, Uniformed Services University
of the Health Sciences, Bethesda, Maryland, USA
3. Occupational and Environmental Epidemiology Branch, Division of Cancer
Epidemiology and Genetics, National Cancer Institute, National Institutes
of Health, Department of Health and Human Services, Rockville, Maryland, USA
4. Epidemiology Branch, National Institute of Environmental Health Sciences, National
Institutes of Health, Department of Health and Human Services, Research
Triangle Park, North Carolina, USA
5. Department of Epidemiology, University of Iowa, Iowa City, Iowa, USA