1. Hospital de Santa Maria, Lisbon, Portugal
2. Turku University Hospital, Turku, Finland
3. Tivoli Hospital, La Louvière, Belgium
4. AHEPA University Hospital, Thessaloniki, Greece
5. Universitätsklinik für Neurologie, Inselspital, Bern, Switzerland
6. University Hospital La Paz, Idipaz, Spain
7. Ninewells Hospital and Medical School, NHS Tayside, UK
8. Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark
9. Université Pierre et Marie Curie-Paris 6, Faculté de médecine, AP-HP, Paris, France
10. Medzinische Universität Wien, Vienna, Austria
11. Medical University of Lodz, Lodz, Poland
12. University of Münster, Münster, Germany
13. Heinrich-Heine University, Moorenstrasse 5, Düsseldorf 40225, Germany