1. Division of Geriatric Medicine, Department of Medicine (D.D.M.), University of Colorado School of Medicine, Aurora.
2. VA Eastern Colorado Geriatric Research Education and Clinical Center, Denver (D.D.M.).
3. Duke University School of Medicine, Durham, NC (L.R.J.).
4. Duke Clinical Research Institute, Durham, NC (L.R.J.).
5. Division of Cardiology (A.S., L.D.S.), University of Colorado School of Medicine, Aurora.
6. Section of Cardiology, VA Eastern Colorado, Aurora, CO (A.S.).