1. VA Eastern Colorado Health Care System, Denver2Department of Medicine, University of Colorado, Denver3Colorado Cardiovascular Outcomes Research Group, Denver
2. VA Eastern Colorado Health Care System, Denver
3. VA Eastern Colorado Health Care System, Denver4Department of Biostatistics and Informatics, Colorado School of Public Health, University of Colorado, Anschutz Medical Campus, Aurora
4. John L. McClellan Memorial Veterans Hospital, Little Rock, Arkansas
5. VA Puget Sound Health Care System, Seattle, Washington
6. Center for Health Services Research in Primary Care, Durham Veterans Affairs Medical Center, Durham, North Carolina
7. Center for Health Services Research in Primary Care, Durham Veterans Affairs Medical Center, Durham, North Carolina8School of Nursing, Duke University, Durham, North Carolina9Division of General Internal Medicine, Department of Medicine, Duke University,
8. Department of Health Policy and Management, Texas A&M School of Rural Public Health, College Station