No abstract available
Publication types
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Comparative Study
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Letter
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Research Support, U.S. Gov't, P.H.S.
MeSH terms
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Autoantibodies / immunology*
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Birth Order*
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Child
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Child Welfare
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Cohort Studies
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Counseling
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Family Health
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Female
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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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Male
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Recurrence
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Sex Factors