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, p2751ISSN1097-0215Publication typeCommentaryDOI10.1002/ijc.28244