We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleProductivity costs among patients with rheumatoid arthritis: the influence of methods and sources to value loss of productivityAuthorsVerstappen, S M MPublicationAnnals of the Rheumatic Diseases, 2005, Vol 64, Issue 12, p1754ISSN0003-4967Publication typearticleDOI10.1136/ard.2004.033977