1. Health Services Research and Development, Durham VA Medical Center, Durham, North Carolina
2. Cancer Prevention, Detection and Control Research Program, Duke Comprehensive Cancer Center, Duke Medical Center, Durham, North Carolina
3. Health Services Research and Development, Durham VA Medical Center, Durham, North Carolina and Cancer Prevention, Detection and Department of Medicine, Division of General Internal Medicine and Center for Aging and Human Development
4. Health Services Research and Development, Durham VA Medical Center, Durham, North Carolina and Cancer Prevention, Detection and Department of Medicine, Division of General Internal Medicine and Center for Aging and Human Development and Department of Psychiatry and Behavioral Sciences, Duke University, Durham, North Carolina
5. Division of Cancer Control and Population Sciences, National Cancer Institute, Bethesda, Maryland