1. From the Erasmus Medical Centre, Thoraxcentre, Rotterdam, Netherlands (J.L.G.-C., E.R., T.O., J.W., P.W.S.); Institute for Social and Preventive Medicine, University of Bern, Bern, Switzerland (E.N., P.J.); CTU Bern, Bern University Hospital, Bern, Switzerland (E.N., P.J.); Royal Brompton Hospital, London, UK (C.d.M.); Schweizerisches HerzzentrumûInselspital, Bern, Switzerland (S.W.); and Cardialysis BV, Rotterdam, Netherlands (G.v.E., P.G.).