We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleFailure to account for selection-bias.AuthorsKalager, Mette; Løberg, Magnus; Fønnebø, Vinjar M.; Bretthauer, MichaelPublicationInternational Journal of Cancer, 2013, Vol 133, Issue 11, p2751ISSN0020-7136Publication typearticleDOI10.1002/ijc.28244