[1] SUNY Upstate Med Univ, Dept Internal Med, Syracuse, NY USA
[2] Western Michigan Univ, Homer Stryker MD Sch Med, Dept Internal Med, Kalamazoo, MI 26982 USA
[3] Allegheny Hlth Network, Dept Internal Med, Pittsburgh, PA USA
[4] Hartford Hosp, Div Cardiol, Hartford, CT USA
[5] Duke Univ, Duke Clin Res Inst, Sch Med, Durham, NC USA
[6] Duke Univ, Sch Med, Dept Med, Durham, NC USA
[7] Baylor Coll Med, Sect Cardiovasc Res, Houston, TX USA
[8] Michael E Debakey Vet Affair Med Ctr, Houston, TX USA
[9] Aga Khan Univ, Dept Med, Karachi, Pakistan
[10] Texas Heart Inst, Houston, TX USA
[11] David Geffen Sch Med UCLA, Dept Med, Div Cardiol, Los Angeles, CA USA
[12] Loma Linda Univ Hlth, Dept Med, Div Cardiol, Loma Linda, CA USA