RT Journal Article SR Electronic T1 HEADACHE SIMPLIFIED JF Neurology JO Neurology FD Lippincott Williams & Wilkins SP 1285 OP 1285 DO 10.1212/01.wnl.0000345656.64835.e3 VO 72 IS 14 A1 Young, William B. YR 2009 UL http://n.neurology.org/content/72/14/1285.abstract AB