Disorders of the Nervous System Caused by Drugs, Toxins, and Chemical Agents, Opiates and Synthetic Analgesic Drugs
Adams & Victors Principles of Neurology Chp 43, pg 1201, Ropper, A.H.,et al, 2014
Diagnosis and Management of Migraine
BMJ 312:1279-1283, Goadsby,P.J.&Olesen,J., 1996
Anticonvulsant Drugs for Management of Pain:A Systematic Review
BMJ 311:1047-1052, McQuay,H.,et al, 1995
Headaches in Pregnancy
Semin Neurol 8:187-192, Reik,L., 1988