- Correspondence to Dr Carmen Tur, Multiple Sclerosis Centre of Catalonia (Cemcat), Neurology-Neuroimmunology Department, Vall d'Hebron University Hospital, Barcelona 08035, Spain;
- Received August 15, 2013
- Revised August 18, 2013
- Accepted August 20, 2013
- First published September 17, 2013.
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