[1] Case Western Reserve Univ, Cleveland, OH 44106 USA
[2] Louis Stokes Cleveland VAMC, Cleveland, OH USA
[3] Case Cardiovasc Res Inst, Cleveland, OH USA
[4] Univ Hosp Case Med Ctr, Harrington Heart & Vasc Inst, Cleveland, OH USA
[5] Louis Stokes VA Med Ctr, Cleveland, OH USA