RT Journal Article SR Electronic T1 Progressive mulifocal leucoencephalopathy in disguise JF Sexually Transmitted Infections JO Sex Transm Infect FD BMJ Publishing Group Ltd SP 303 OP 303 DO 10.1136/sti.78.4.303 VO 78 IS 4 YR 2002 UL http://sti.bmj.com/content/78/4/303.abstract AB