No abstract available
MeSH terms
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Antibodies, Viral / analysis*
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Confidentiality
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Female
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HIV Seropositivity / epidemiology*
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HTLV-I Infections / epidemiology*
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Hepatitis B / epidemiology*
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Humans
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London / epidemiology
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Pregnancy
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Pregnancy Complications, Infectious / epidemiology*
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Prevalence
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Retrospective Studies