RT Journal Article SR Electronic T1 Local Factors in the Causation of Migraine JF The Journal of the College of General Practitioners JO J Coll Gen Pract FD British Journal of General Practice SP 17 OP 21 VO 6 IS Suppl 4 A1 C. A. Keele YR 1963 UL http://bjgp.org/content/6/Suppl_4/17.abstract AB