%0 Journal Article %T Progressive multifocal leukoencephalopathy with extended natalizumab dosing %A David B. Clifford %A Laura E. Baldassari %A Robert J. Fox %A Stephen E. Jones %J Archive of "Neurology: Clinical Practice". %D 2018 %R 10.1212/CPJ.0000000000000457 %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6075974/