Back to matchesWe found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleRandomized Clinical Trials and Observational Studies Are More Often Alike Than Unlike.AuthorsRoss, Joseph S.PublicationJAMA Internal Medicine, 2014, Vol 174, Issue 10, p1557ISSN2168-6106Publication typeArticleDOI10.1001/jamainternmed.2014.3366