Visual Failure and Optic Atrophy Associated with Chlorambucil Therapy
BMJ 306:109, Yiannakis,P.H.&Larner,A.J., 1993
Progressive Multifocal Leukoencephalopathy in a 15-Year-Old Boy with Scleroderma and Secondary Amyloidosis
Pediatrics 103:1475-1479, Hahn,J.S.,et al, 1999