Subacute Sclerosing Panencephalitis
Postgrad Med J 78:63-70, Garg, R.K.,et al, 2002
Progressive Rubella Panencephalitis
NEJM 292:990-993,1023, Townsend,J.,et al, 1975
Etiology of Progressive Multifocal Leukoencephalopathy
NEJM 289:l278, Narayan,O.,et al, 1973