1. From the Laboratory for Gene Therapy and Molecular Imaging at the Max Planck Institute for Neurological Research, Cologne, Germany; Department of Physiology, Faculty of Medicine, Justus Liebig University, Giessen, Germany; Institute for Neurophysiology, University of Cologne, Cologne, Germany; Institute of Virology, University of Zurich, Zurich, Switzerland; Cardiology Division, Clinic of Internal Medicine I, Friedrich Schiller University, Jena, Germany; and European Institute for Molecular Imaging,...