Infections of the Nervous System, (Bacterial, Fungal, Spirochetal, Parasitic) and Sarcoidosis, Sarcoidosis
Adams & Victors Principles of Neurology, Chp 32, pg 721, Ropper, A.H.,et al, 2014
Neurologic Manifestations of Progressive Systemic Sclerosis, 1972
Nebraska Med J 58:106, Aita,J.A., 1973