1. Cardiology, Health Services Research and Development/Rehabilitation Research and Development, Rehabilitation Outcomes Research Center, Department of Veterans Affairs Medical Center, Gainesville, Florida.
2. Division of Cardiovascular Medicine, University of Florida College of Medicine, Gainesville, Florida.
3. Pharmacy Sections, Health Services Research and Development/Rehabilitation Research and Development, Rehabilitation Outcomes Research Center, Department of Veterans Affairs Medical Center, Gainesville, Florida.
4. Department of Veterans' Affairs, Health Services Research and Development/Rehabilitation Research and Development, Rehabilitation Outcomes Research Center, Department of Veterans Affairs Medical Center, Gainesville, Florida.
5. Department of Health Services Research, Management and Policy, University of Florida College of Public Health and Health Professions, Gainesville, Florida.