- Correspondence to Carlos Casasnovas Pons, Neuromuscular Unit, Neurology Department, Hospital Universitari de Bellvitge, C/Feixa Llarga s/n, 08907 L'Hospitalet de Llobregat, Barcelona, Spain;
- Received August 13, 2009
- Revised October 15, 2009
- Accepted October 17, 2009
- First published November 3, 2009.
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