title: Progressive multifocal leukoencephalopathy: can we reduce risk in patients receiving biological immunomodulatory therapies?
authors.forename: Kenneth L
authors.initials: KL
authors.lastname: Tyler
mesh_terms: D006801:Humans; D056747:Immunomodulation; D007577:JC Virus / Q000472:pathogenicity; D007968:Leukoencephalopathy, Progressive Multifocal / Q000276:immunology* / Q000517:prevention & control*