- Correspondence to: Dr Y Agid Centre d’Investigation Clinique, Hôpital de la Salpêtrière, 47 boulevard de l’Hôpital, 75013 Paris, France;
- Received April 28, 2004
- Accepted December 1, 2004
- Revised November 29, 2004
- First published June 16, 2005.
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