No abstract available
MeSH terms
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Acute Disease
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Adult
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Hepatitis B / blood
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Hepatitis B / etiology*
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Hepatitis B Vaccines / adverse effects*
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Homosexuality, Male
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Humans
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Male
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Severity of Illness Index
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Vaccines, Synthetic / adverse effects*
Substances
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Engerix-B
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Hepatitis B Vaccines
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Vaccines, Synthetic