1. Institute for Molecular Cardiology, Heinrich Heine University, Düsseldorf, Germany (N.S., T.G.-S., U.F.).
2. Cardiovascular Imaging, University Medical Center, Leiden, the Netherlands (N.S., H.L.).
3. Institute for Translational Pharmacology, Heinrich Heine University, Düsseldorf, Germany (R.S., K.W., M.G.).