Back to matchesWe found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleThat instrument is lousy! In search of agreement when using instrumental variables estimation in substance use research.AuthorsFrench, Michael T.; Popovici, IoanaPublicationHealth Economics, 2011, Vol 20, Issue 2, p127ISSN1057-9230Publication typeArticleDOI10.1002/hec.1572