No abstract available
Publication types
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Research Support, U.S. Gov't, P.H.S.
MeSH terms
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Acquired Immunodeficiency Syndrome / epidemiology*
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Adult
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Ambulatory Care / statistics & numerical data
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Data Collection / methods*
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Epidemiologic Methods*
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Female
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Health Surveys*
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Humans
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Informed Consent
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Longitudinal Studies
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Male
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Massachusetts / epidemiology
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Research Design