1. Department of Internal Medicine, Hôpital Universitaire Gabriel-Montpied, Clermont-Ferrand, France
2. University of Clermont-Ferrand, M2iSH, Inserm U1071, Clermont-Ferrand, France
3. Department of Ophtalmology, Hôpital Universitaire Gabriel-Montpied, Clermont-Ferrand, France
4. Department of Neurology, Hôpital Jacques Lacarin, Vichy, France
5. Department of Neurology, Hôpital Universitaire Gabriel-Montpied, Clermont-Ferrand, France