1. Section of Heart Failure and Transplantation Medicine (P.M., W.H.W.T., J.E.F.), Department of Cardiovascular Medicine, Heart, Vascular and Thoracic Institute, Cleveland Clinic, OH.
2. Section of Preventive Cardiology and Rehabilitation (E.H.V.I.), Department of Cardiovascular Medicine, Heart, Vascular and Thoracic Institute, Cleveland Clinic, OH.