1. From Department of Cardiology and Angiology I, Heart Center, University of Freiburg, Germany (F.P., X.B., S.K., I.Hi., C.S., T.H., J.S.E., M.K., M.M., C.B., S.G.); Department of Biology, Albert-Ludwigs-University, Freiburg, Germany (F.P., F.L.); Department of Hematology and Oncology, University Hospital Freiburg, Germany (R.Z., F.L.); and Experimental Cardiology Laboratory, University Medical Center Utrecht, The Netherlands (I.Ho.).