1. From the University Heart Center, Department of General and Interventional Cardiology (S.B., U.K.R., S.B., K.M.) and Department of Diagnostic and Interventional Radiology (G.K.L., G.A.), University Medical Center Hamburg-Eppendorf, Hamburg, Germany; Department of Molecular Pathology, University of Tuebingen, Tuebingen, Germany (R.K.); Philips Research Hamburg, Hamburg, Germany (C.S.); and Philips Healthcare Germany, Hamburg, Germany (B.S.).