PT - JOURNAL ARTICLE AU - K E Gordon AU - J M Dooley AU - E P Wood TI - Is migraine a risk factor for the development of concussion? AID - 10.1136/bjsm.2005.022251 DP - 2006 Feb 01 TA - British Journal of Sports Medicine PG - 184--185 VI - 40 IP - 2 4099 - http://bjsm.bmj.com/content/40/2/184.short 4100 - http://bjsm.bmj.com/content/40/2/184.full SO - Br J Sports Med2006 Feb 01; 40