Media type: E-Article Title: De-escalation from natalizumab in multiple sclerosis: recurrence of disease activity despite switching to glatiramer acetate Contributor: Havla, Joachim; Gerdes, Lisa Ann; Meinl, Ingrid; Krumbholz, Markus; Faber, Hans; Weber, Frank; Pellkofer, Hannah Luise; Hohlfeld, Reinhard; Kümpfel, Tania imprint: Springer Science and Business Media LLC, 2011 Published in: Journal of Neurology Language: English DOI: 10.1007/s00415-011-5996-y ISSN: 0340-5354; 1432-1459 Keywords: Neurology (clinical) ; Neurology Origination: Footnote: