Wijburg, Martijn T MRI criteria differentiating asymptomatic PML from new MS lesions during natalizumab pharmacovigilance. [electronic resource] - Journal of neurology, neurosurgery, and psychiatry 10 2016 - 1138-45 p. digital Publication Type: Journal Article ISSN: 1468-330X Standard No.: 10.1136/jnnp-2016-313772 doi Subjects--Topical Terms: AdultDiagnosis, DifferentialFemaleFollow-Up StudiesHumansImmunologic Factors--adverse effectsLeukoencephalopathy, Progressive Multifocal--chemically inducedMagnetic Resonance ImagingMaleMiddle AgedMultiple Sclerosis, Relapsing-Remitting--diagnostic imagingNatalizumab--adverse effectsPharmacovigilanceRetrospective Studies