1. Surveillance and Health Services Research Program, American Cancer Society; Atlanta GA
2. Department of Nutrition; Gillings School of Global Public Health, University of North Carolina at Chapel Hill; Chapel Hill NC
3. Department of Epidemiology; Gillings School of Global Public Health, University of North Carolina at Chapel Hill; Chapel Hill NC
4. Division of Epidemiology and Community Health; University of Minnesota; Minneapolis MN
5. Department of Epidemiology; Johns Hopkins Bloomberg School of Public Health; Baltimore MD