1. Department of Health Behavior and Policy, Virginia Commonwealth University School of Medicine and VCU Massey Cancer Center, Richmond, Virginia.
2. Department of Health Behavior and Policy and Department of Biostatistics, Virginia Commonwealth University School of Medicine
3. Kaiser Permanente Center for Research and Evaluation, Atlanta, Georgia.
4. Samford University, Birmingham, Alabama
5. Department of Pharmacotherapy & Outcomes Science, Virginia Commonwealth University School of Pharmacy
6. Southeast Permanente Medical Group, Atlanta, Georgia
7. Department of Health Behavior and Policy, Virginia Commonwealth University School of Medicine, Richmond, Virginia.
8. Duke University School of Medicine, Durham, North Carolina
9. Department of Mathematics and Statistics, Georgetown University, Washington, DC.