Diehr P, Wood R, Wolcott B, Slay L, Tompkins RK. On the relationships among headache symptoms. J Chronic Dis. 1982;35(5):321-31.
Diehr P, Wood R, Wolcott B, Slay L, Tompkins RK. On the relationships among headache symptoms. J Chronic Dis. 1982;35(5):321-31.