1. From the Department of Cardiovascular Medicine, Heart and Vascular Institute, Cleveland Clinic Foundation, OH (J.L.G., P.A., R.H., M.Y.D., E.E.R., D.M.P.); Division of Cardiology, UT Southwestern Medical Center, Dallas, TX (D.C., P.H.J., C.D.M., C.R.A., J.A.d.L.); Johns Hopkins Ciccarone Center for the Prevention of Heart Disease, Baltimore, MD (P.H.J.); and MedStar Sports Medicine Research Center, Baltimore, MD (R.E.D., K.A., A.E.L., A.M.T.).