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Multicenter AIDS Cohort Study (MACS) Audio (En español)

Started in 1984, the study involves collection of biological specimens and medical and behavioral data on MSM (men who have sex with men) in order to study the natural and treated history of HIV. The Multicenter AIDS Cohort Study (MACS) has significantly contributed to the understanding of HIV, AIDS, and the effects of antiretroviral therapy (ART).

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