We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleThe International Classification of Headache Disorders: 2nd edition.AuthorsHeadache Classification Subcommittee of the International Headache SocietyPublicationCephalalgia : an international journal of headache, 2004, Vol 24 Suppl 1, p9ISSN0333-1024Publication typearticleDOI10.1111/j.1468-2982.2003.00824.x