We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleIs the simple versus complex classification of concussion a valid and useful differentiation?AuthorsMakdissi, MPublicationBritish Journal of Sports Medicine, 2009, Vol 43, Issue Suppl, pi23ISSN0306-3674Publication typearticleDOI10.1136/bjsm.2009.058206