%0 Journal Article %T OBSERVATIONS ON 500 CASES OF MIGRAINE AND ALLIED VASCULAR HEADACHE %A Selby, George %A Lance, James W. %J Journal of Neurology Neurosurgery & Psychiatry %V 23 %N 1 %P 23-32 %@ 0022-3050 %D 1960-02-01 %I BMJ Publishing Group Ltd %~ DeepDyve