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Oser C, Biebel E, Harris M, Klein E, Leukefeld C.Oser C, et al. Among authors: leukefeld c.J Addict Med. 2011 Mar;5(1):36-42. doi: 10.1097/ADM.0b013e3181ccec2e.J Addict Med. 2011.PMID: 21359106Free PMC article.
Staton-Tindall M, Duvall JL, Leukefeld C, Oser CB.Staton-Tindall M, et al. Among authors: leukefeld c.Womens Health Issues. 2007 Jul-Aug;17(4):183-92. doi: 10.1016/j.whi.2007.02.004. Epub 2007 Jun 7.Womens Health Issues. 2007.PMID: 17560124Free PMC article.