RT Journal Article SR Electronic T1 What is Migraine? JF The Journal of the College of General Practitioners JO J Coll Gen Pract FD British Journal of General Practice SP 5 OP 8 VO 6 IS Suppl 4 A1 Macdonald Critchley YR 1963 UL http://bjgp.org/content/6/Suppl_4/5.abstract AB