[1] Univ Alabama Birmingham, Div Cardiovasc Dis, 1670 Univ Blvd,Volker Hall B140, Birmingham, AL 35294 USA
[2] Univ Alabama Birmingham, Dept Med, Birmingham, AL 35294 USA
[3] Indian Springs Sch, Pelham, AL USA
[4] Univ Alabama Birmingham, Ctr Community Outreach Dev, Birmingham, AL 35294 USA
[5] Univ Texas Southwestern Med Ctr Dallas, Dept Internal Med, Div Cardiol, Dallas, TX USA
[6] Univ Minnesota, Cardiovasc Div, Minneapolis, MN USA
[7] Univ Alabama Birmingham, Sch Nursing, Birmingham, AL 35294 USA
[8] Birmingham Vet Affairs Med Ctr, Sect Cardiol, Birmingham, AL USA