We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleCONSORT statement: extension to cluster randomised trials.AuthorsCampbell, Marion K; Elbourne, Diana R; Altman, Douglas G; CONSORT groupPublicationBMJ (Clinical research ed.), 2004, Vol 328, Issue 7441, p702ISSN1756-1833Publication typeJournal ArticleDOI10.1136/bmj.328.7441.702