Viral Infections of the Nervous System, Chronic Meningitis, and Prior Diseases, Syndromes of Herpes Zoster
Adams & Victors Principles of Neurology, Chp 33, pg 755, Ropper, A.H.,et al, 2014
Cluster Headache
Neurol 42 (Suppl 2) :22-31992., Mathew,N.T., 1992