1. Cecil G. Sheps Center for Health Services Research, University of North Carolina, Chapel Hill2Division of General Medicine & Clinical Epidemiology, University of North Carolina School of Medicine, Chapel Hill3Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill
2. Department of Medicine, University of Iowa Carver College of Medicine, Iowa City5University of Iowa Holden Comprehensive Cancer Center, University of Iowa, Iowa City6Department of Family and Community Medicine, University of New Mexico School of Medicine, Albuquerque
3. Department of Family Medicine, Carolinas HealthCare System, Charlotte, North Carolina
4. Department of Family and Community Medicine, University of New Mexico School of Medicine, Albuquerque8University of New Mexico Comprehensive Cancer Center, Albuquerque
5. Department of Family and Community Medicine, University of New Mexico School of Medicine, Albuquerque9Department of Anthropology, University of Maryland, College Park
6. Division of General Medicine & Clinical Epidemiology, University of North Carolina School of Medicine, Chapel Hill10Department of Biostatistics, University of North Carolina, Chapel Hill
7. University of New Mexico Comprehensive Cancer Center, Albuquerque
8. Cecil G. Sheps Center for Health Services Research, University of North Carolina, Chapel Hill
9. Cecil G. Sheps Center for Health Services Research, University of North Carolina, Chapel Hill2Division of General Medicine & Clinical Epidemiology, University of North Carolina School of Medicine, Chapel Hill3Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill11Department of Internal Medicine, University of Texas Dell Medical School, Austin