1. Multiple Sclerosis Research Clinic, The Ottawa Hospital
- General Campus, 501 Smyth Road, Ottawa, Ontario, Canada K1H 8L6
2. Division of Clinical Neurology, University Hospital,
Queen's Medical Centre, Nottingham NG7 2UH, UK
3. Service de Neurologie, Hôpital Pellegrin, Fédération
des Neurosciences Cliniques du CHU de Bordeaux, Bordeaux Cedex 33076, France
4. Department of Neurophysiology, University of Milan,
IRCCS Ospedale San Raffaele, via Olgettina 60, Milan 20132, Italy
5. Department of Neurology, Mayo Clinic, Rochester, Minnesota
55095, USA
6. Department of Neurology, Lund University Hospital, Lund
S-22185, Sweden
7. Neuroscience Centre, Copenhagen University Hospital,
Copenhagen D-2100, Denmark