1. Department of Preventive Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois
2. Department of Epidemiology, University of North Carolina Gillings School of Public Health, Chapel Hill
3. Department of Nutrition, University of North Carolina Gillings School of Public Health, Chapel Hill
4. Institute for Social Research, University of Michigan, Ann Arbor
5. Department of Epidemiology, Colorado School of Public Health, Aurora
6. Department of Quantitative Health Sciences, University of Massachusetts Medical School, Worcester
7. Division of Research, Kaiser Permanente Northern California, Oakland
8. Department of Epidemiology and Biostatistics, Drexel University Dornsife School of Public Health, Philadelphia, Pennsylvania