1 From Pole des Neurosciences, B4 Neurology Unit (D. Biotti, D. Brassat), and Department of Neuroradiology (F.B.), Hôpital Pierre-Paul-Riquet, CHU Purpan; Service d'Hépato-gastro-entérologie (P.T.), Clinique St Jean Du Languedoc; and INSERM UMR 1043 et Université Toulouse III (D. Brassat), France. biotti.d@chu-toulouse.fr.
2 From Pole des Neurosciences, B4 Neurology Unit (D. Biotti, D. Brassat), and Department of Neuroradiology (F.B.), Hôpital Pierre-Paul-Riquet, CHU Purpan; Service d'Hépato-gastro-entérologie (P.T.), Clinique St Jean Du Languedoc; and INSERM UMR 1043 et Université Toulouse III (D. Brassat), France.