Back to matchesWe found a matchYour institution may have rights to this item. Sign in to continue.TitleEpidemiological classification and social impact of chronic headache.AuthorsManzoni, Gian; Torelli, PaolaPublicationInternal & Emergency Medicine, 2010, Vol 5, p1ISSN1828-0447Publication typeArticleDOI10.1007/s11739-010-0444-z