TY - RPRT TI - "Spontaneous" progressive multifocal leukoencephalopathy. Immunologic aspects. AU - A Knight AU - P O'Brien AU - D Osoba PY - 1972 DO - 10.7326/0003-4819-77-2-229 UR - https://pubmed.ncbi.nlm.nih.gov/4264546/ ID - 4264546 ER -