Polymyalgia Rheumatica
BMJ 336:765-769, Michet,C.J. &Matteson,E.L., 2008
Infections of the Nervous System, (Bacterial, Fungal, Spirochetal, Parasitic) and Sarcoidosis, Leptospirosis
Adams & Victors Principles of Neurology, Chp 32, pg 730, Ropper, A.H.,et al, 2014