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Porco TC, Martin JN, Page-Shafer KA, Cheng A, Charlebois E, Grant RM, Osmond DH.Porco TC, et al.AIDS. 2004 Jan 2;18(1):81-8. doi: 10.1097/00002030-200401020-00010.AIDS. 2004.PMID: 15090833Free PMC article.