No abstract available
Publication types
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Research Support, N.I.H., Extramural
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Research Support, Non-U.S. Gov't
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Research Support, U.S. Gov't, Non-P.H.S.
MeSH terms
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Africa / epidemiology
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Cohort Studies
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HIV Infections* / epidemiology
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HIV Infections* / prevention & control
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Humans
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South Africa
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Vaccines*