1. Department of Medicine, Denver Health Medical Center, CO (P.N.P.).
2. Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora (P.N.P., L.A.A.).
3. Department of Medicine, Stanford University, Palo Alto, CA (P.A.H.).
4. Veteran Affairs Palo Alto Healthcare System, CA (P.A.H.).
5. Nursing Institute and Kaufman Center for Heart Failure, Heart and Vascular Institute, Cleveland Clinic, OH (N.M.A.).
6. Department of Cardiology, Albert Einstein College of Medicine, Montefiore Einstein Heart and Vascular Institute, Bronx, New York (I.L.P.).