Chronic Daily HeadacheNEJM 354:158-165, Dodick,D.W., 2006
Chronic Daily HeadacheNeurol 42:32-36, Sheftell,F.D., 1992
Ibuprofen-Induced Meningitis:Detection of Intrathecal IgG Synthesis & Immune ComplexesNeurol 39:1578-1580, Chez,M.,et al, 1989