1. Neurology Department , Sainte Musse Hospital , 54 avenue Henri Sainte-Claire Deville , 83100 Toulon , France
2. Ophthalmology Department , Sainte Musse Hospital , Toulon , France
3. Neurochemistry and Neurogenetics Unit, Department of Biochemistry and Molecular Biology , Lyon University Hospital , BRON Cedex , France
4. Biochemistry Department , Sainte Musse Hospital , Toulon , France