PT - JOURNAL ARTICLE AU - James W Lance TI - Observations on 500 cases of migraine and allied vascular headache AID - 10.1136/jnnp-2011-301630 DP - 2012 Jul 01 TA - Journal of Neurology, Neurosurgery & Psychiatry PG - 673--674 VI - 83 IP - 7 4099 - http://jnnp.bmj.com/content/83/7/673.short 4100 - http://jnnp.bmj.com/content/83/7/673.full SO - J Neurol Neurosurg Psychiatry2012 Jul 01; 83