Chronic Post-Traumatic Headache Often a MythNeurol 46:915-916, Warner,J.S.&Fenichel,G.M., 1996
Headache as the Only Neurological Sign of Cerebral Venous Thrombosis:A Series of 17 CasesJNNP 76:1084-1087,1043, Cumurciuc,R.,et al, 2005