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UptoDate Oct. 2014, McClain, K.L., 2014
MR Imaging Presentation of Intracranial Disease Associated with Langerhans Cell Histiocytosis
AJNR 25:880-891, Prayer, D.,et al, 2004
CNS Cryptococcosis in AIDS:Spectrum of MR Findings
J Comput Assist Tomogr 17:438-441, Andreula,C.F.,et al, 1993