1. From the Duke Clinical Research Institute, Durham, NC (A.C.F., P.M., M.W.S., W.S.J., S.V.); Division of Cardiology (A.C.F., J.K.H., W.S.J., S.V.) and Division of Cardiovascular and Thoracic Surgery (G.C.H.), Duke University, Durham, NC; Division of Cardiology, Mayo Clinic, Rochester, MN (D.R.H.); Saint Luke’s Mid America Heart Institute, University of Missouri-Kansas City (D.J.C.); Division of Cardiothoracic Surgery, Emory University, Atlanta, GA (V.H.T.); The Heart Hospital Baylor Plano, TX (M.J.M....