RT Journal Article SR Electronic T1 Electroencephalography is not useful in the routine evaluation of headache JF Evidence Based Medicine JO Evid Based Med FD BMJ Publishing Group Ltd SP 56 OP 56 DO 10.1136/ebm.1996.1.56 VO 1 IS 2 YR 1996 UL http://ebm.bmj.com/content/1/2/56.abstract AB