We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleLevels of evidence needed for changing indications, contraindications, and Food and Drug Administration labeling: the case of metformin.AuthorsEurich DT; Majumdar SR; McAlister FA; Tsuyuki RT; Johnson JAPublicationArchives of internal medicine, 2011, Vol 171, Issue 11, p1042ISSN1538-3679Publication typearticleDOI10.1001/archinternmed.2011.224