- Correspondence to Jean-Philippe Azulay, Service de Neurologie et Pathologie du Mouvement. Hôpital de la Timone, 264, rue Saint-Pierre, 13385 Marseille cedex 05, France;
- Received February 3, 2009
- Revised July 17, 2009
- Accepted July 22, 2009
- First published September 30, 2009.
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