- Correspondence to: Dr Lionel Thivard INSERM U739, Faculté de Médecine Pitié-Salpêtrière, 105, Boulevard de l’Hôpital, 75013, Paris, France;
- Received July 7, 2006
- Accepted February 18, 2007
- Revised January 7, 2007
- First published July 16, 2007.
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