1. From the Thoraxcenter, Erasmus Medical Center, Rotterdam, The Netherlands (S.N., Y.I., P.S., Y.O.); Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands (M.G.); Aarhus University Hospital, Skejby, Aarhus, Denmark (E.H.C.); and International Centre for Circulatory Health, NHLI, Imperial College London, UK (P.W.S.).