Disorders of the Nervous System Caused by Drugs, Toxins, and Chemical Agents, Lead
Adams & Victors Principles of Neurology Chp 43, pg 1220, Ropper, A.H.,et al, 2014
Cluster Headache
BMJ 344:e2407, Nesbitt,A.D.,et al, 2012
Successful Treatment of Persistent Migraine Aura with Divalproex Sodium
Neurol 48:261-262, Rothrock,J.F., 1997