No abstract available
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Adult
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Antibodies, Antinuclear / physiology
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Child
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Child, Preschool
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Diseases in Twins / epidemiology
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Diseases in Twins / etiology
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Finland / epidemiology
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Health Surveys
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Heart Block / congenital*
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Heart Block / epidemiology*
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Heart Block / immunology
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Humans
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Infant
Substances
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Antibodies, Antinuclear
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SS-B antibodies