1. Center for Magnetic Resonance Research and Department of Radiology; University of Minnesota; Minneapolis Minnesota USA
2. Centre de NeuroImagerie de Recherche-CENIR; Paris France
3. Université Pierre et Marie Curie-Paris 6; Centre de Recherche de l'Institut du Cerveau et de la Moelle épinière; UMR-S975 Paris France
4. CNRS; UMR 7225 Paris France
5. Inserm, U975; Paris France
6. ICM-Institut du Cerveau et de la Moelle épinière; Paris France. Department of Neuroradiology; Groupe Hospitalier Pitié-Salpêtrière; Paris France
7. ICM-Institut du Cerveau et de la Moelle épinière; Paris France
8. Department of Neurology; Groupe Hospitalier Pitié-Salpêtrière; Paris France
9. Department of Neurology; Charles University in Prague; First Faculty of Medicine and General Teaching Hospital; Prague Czech Republic
10. Clinical Research Unit; Pitié-Salpêtrière Hospital; AP-HP Paris France
11. Department of Biostatistics and Medical Informatics; Pitié-Salpêtrière Hospital; AP-HP Paris France