1. Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD 20892
2. Division of Nutritional Sciences, Cornell University, Ithaca, NY 14853
3. Department of Pathology and Laboratory Medicine, St. Luke's-Roosevelt Hospital Center and Columbia University, New York, NY 10025
4. Department of Nutrition Sciences, University of Alabama, Birmingham, AL 35294
5. Department of Preventive Medicine and Biometrics, University of Colorado School of Medicine, Denver, CO 80262
6. Meharry Medical College, School of Medicine, Occupational and Preventive Medicine, Nashville, TN 37208
7. Division of Epidemiology and Biostatistics, School of Public Health, University of Illinois at Chicago, Chicago, IL 60612
8. Department of Epidemiology and Preventive Medicine, University of Maryland School of Medicine, Baltimore, MD 21201