[1] Ocala Reg Med Ctr, Dept Grad Med Educ, Miami, FL USA
[2] Univ Miami, Miller Sch Med, Div Cardiovasc, Miami, FL 33136 USA
[3] Univ Queensland, Sch Med, Dept Cardiovasc Dis, John Ochsner Heart & Vasc Inst,Ochsner Clin Sch, New Orleans, LA USA
[4] NYU, Sch Med, New York, NY USA
[5] Univ Illinois, Coll Appl Hlth Sci, Dept Phys Therapy, Chicago, IL USA
[6] William Beaumont Hosp, Dept Cardiovasc Med, Royal Oak, MI 48072 USA