A 47-Year-Old Woman with Tension-Type Headaches
JAMA 286:960-966, Welch,K.M.A., 2001
Migraine
Lancet 363:381-391, Silberstein,S.D., 2004
Headache
JNNP 57:134-143, Pearce,J.M.S., 1994
Diagnosing the Severe Headache
Neurol 44:S6-S12, Dalessio,D.J., 1994
Chronic Daily Headache
Neurol 42:32-36, Sheftell,F.D., 1992