1. From the St. Thomas’ Hospital (M.R.G., A.K.S., J.B., C.B., J.G., G.S.C.-W., A.R.), The Heart Hospital (P.D.L.), University College Hospital (P.D.L., P.T.), and King’s College, London, United Kingdom (S.G.D., J.L.P., K.S.R., R.R.); and University Hospital, Rennes, France (C.L.).