1. Department of Neurology; University Hospital Würzburg; Würzburg Germany
2. Comprehensive Heart Failure Center Würzburg; Würzburg Germany
3. Department of Nuclear Medicine; University Hospital Würzburg; Würzburg Germany
4. Russell H. Morgan Department of Radiology and Radiological Science; Johns Hopkins School of Medicine; Baltimore MD
5. Department of Medicine I; University Hospital Würzburg; Würzburg Germany
6. Medical Clinic and Policlinic III, University Hospital of Halle (Saale); Halle (Saale) Germany
7. Department of Biomedical Imaging; National Cardiovascular and Cerebral Research Center; Osaka Japan
8. Institute of Physiology; University of Würzburg; Würzburg Germany
9. Clinical Trial Center Würzburg; University Hospital Würzburg; Würzburg Germany
10. Institute for Clinical Epidemiology and Biometry; University of Würzburg; Würzburg Germany
11. Department of Cardiology and Pulmonology; Medical University Brandenburg; Brandenburg Germany
12. Department of Neurology; University Hospital Essen; Essen Germany