1. From the Columbia University Medical Center and the Cardiovascular Research Foundation, New York, NY (G.W.S., I.M., G.S.M., G.D., R.M., J.W.M., M.B.L.); Kardiologisches Institut, Bad Soden, Germany (N.J.R.); Thoraxcenter, Rotterdam, the Netherlands (A.H., P.W.S.); Mid Carolina Cardiology, Charlotte, NC (D.A.C.); Columbus Hospital, Milan, Italy (A.C.); Brigham and Women’s Hospital, Boston, Mass (D.S.B.); Scripps Clinic, La Jolla, Calif (P.S.T.); St Michael’s Hospital, Toronto, Ontario, Canada (B.H.S....