Infections of the Nervous System, (Bacterial, Fungal, Spirochetal, Parasitic) and Sarcoidosis, LegionellaAdams & Victors Principles of Neurology, Chp 32, pg 709, Ropper, A.H.,et al, 2014
Gold EncephalopathyJNNP 40:1021, McAuley,D.L.F.,et al, 1977