1. Serviço de Neurologia, Department of Neurosciences and Mental Health, Hospital Santa Maria/Centro Hospitalar Lisboa Norte, Portugal (J.M.F.).
2. Department of Neurology, Amsterdam University Medical Centers, the Netherlands (J.M.C., B.v.d.V.).
3. Department of Radiology and Neuroradiology, University of Kiel, Germany (O.J.).
4. Neurologische Klinik, Abteilung für Neuroradiologie, Universitätsklinikum Heidelberg, Heidelberg, Germany (M.B.).
5. Department of Medicine and Surgery, Insubria University, Varese, Italy (F.D.).
6. Faculty of Health Sciences and Physical Education, Kazimierz Pulaski University of Technology and Humanities, Radom, Poland (A.K.).
7. HMS Analytical Software GmbH, Weimar (Lahn), Germany (C.M.).
8. Boehringer Ingelheim International, Ingelheim am Rhein, Germany (J.C.).
9. Boehringer Ingelheim B.V., Alkmaar, the Netherlands (H.H.).
10. Faculty of Medicine, University Duisburg-Essen, Germany (H.-C.D.).