1. Department of Psychiatry, Queen Elizabeth Hospital, 10362 Berlin, Germany
2. Department of Molecular Cell Physiology, Institute of Molecular Pharmacology, 10125 Berlin, Germany
3. Day Clinic of Cognitive Neurology, University of Leipzig, 04103 Leipzig, Germany
4. Department of Cognitive Neurology & Nuclear Magnetic Resonance Unit, Max Planck Institute for Human Cognitive and Brain Sciences, 04103 Leipzig, Germany
5. Clinic for Pediatric Cardiology, University Clinic of Saarland, 66421 Homburg/Saar, Germany
6. Department of Psychiatry, University of Magdeburg, 39120 Magdeburg, Germany