1. Department of Health Policy and Management, University of North Carolina at Chapel Hill, Chapel Hill, NC
2. Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC
3. Division of General Internal Medicine, Weill Cornell Medical College, New York, NY
4. Division of Epidemiology, Department of Clinical Sciences, University of Texas Southwestern Medical Center, Dallas, TX
5. Department of Health Behavior, University of North Carolina at Chapel Hill, Chapel Hill, NC
6. Division of Hematology and Oncology, University of North Carolina at Chapel Hill, Chapel Hill, NC
7. Department of Epidemiology, University of North Carolina at Chapel Hill, Chapel Hill, NC