[1] Univ Pittsburgh, Dept Med, Sect Geriatr Cardiol, Vet Affairs Geriatr Res Educ, Pittsburgh, PA USA
[2] Univ Pittsburgh, Ctr Clin, Pittsburgh, PA USA
[3] Columbia Univ, Dept Med, Div Cardiol, Med Ctr, New York, NY USA
[4] Johns Hopkins Univ, Sch Med, Dept Med, Baltimore, MD 21205 USA
[5] Univ Calif San Francisco, Phillip R Lee Inst Hlth Policy Studies, San Francisco, CA 94143 USA
[6] NIA, Div Geriatr & Clin Gerontol, Bethesda, MD 20892 USA
[7] Assoc Specialty Prof, Alexandria, VA USA
[8] Vanderbilt Univ, Med Ctr, Dept Med, Div Cardiovasc Med, Nashville, TN USA
[9] John A Hartford Fdn, New York, NY USA
[10] Univ Calif Los Angeles, David Geffen Sch Med, Div Geriatr, Los Angeles, CA 90095 USA
[11] Washington Univ, Sch Med, Dept Med, Div Cardiol, St Louis, MO 63110 USA