[1] Univ Alabama, Geriatr Heart Failure Clin, Div Gerontol Geriatr & Palliat Care, Birmingham, AL 35294 USA
[2] Univ Alabama, Ctr Heart Failure Res, Birmingham, AL 35294 USA
[3] VA Med Ctr, Birmingham, AL USA
[4] Univ Alabama, Div Cardiovasc Dis, Birmingham, AL 35294 USA