Media type: E-Article Title: Progressive multifocal leukoencephalopathy after interferon beta-1a monotherapy Contributor: Lehmann, Helmar C.; Krüger, Klaus; Fink, Gereon R.; Schroeter, Michael Published: Springer Science and Business Media LLC, 2015 Published in: Journal of Neurology, 262 (2015) 3, Seite 771-773 Language: English DOI: 10.1007/s00415-014-7620-4 ISSN: 0340-5354; 1432-1459 Origination: Footnote: