Lessons Learned From Fatal Progressive Multifocal Leukoencephalopathy in a Patient With Multiple Sclerosis Treated With Natalizumab. Boster AL, Nicholas JA, Topalli I, Kisanuki YY, Pei W, Morgan-Followell B, Kirsch CF, Racke MK, Pitt D JAMA Neurol. 2013 Jan 21:1-5. PMID: 23338729. Abstract CommentRecommendBookmarkWatch