Migraine--Current Understanding and Treatment
NEJM 346:257-270, Goadsby,P.J.,et al, 2002
Opioids Versus Antidepressants in Postherpetic Neuralgia
Neurol 59:1015-1021, Raja,S.N.,et al, 2002
Symptomatic and Prophylactic Treatment of Migraine and Tension-Type Headache
Neurol 42:16-21, Schulman,E.A.&Silberstein,S.D., 1992