1. From Cardiology, Swiss Cardiovascular Center Bern, University Hospital Bern (S.W., G.D.P., W.M., B.M., O.M.H.), and Cardiology (G.N.) and Experimental Surgery (I.M., O.D., B.L.), University Hospital Zurich, Switzerland; and Hematology, University of Utrecht, Netherlands (P.D.G., Y.P.W.).