No abstract available
MeSH terms
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Adolescent
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Antibodies, Antinuclear / blood
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Cardiovascular Diseases / diagnosis
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Cardiovascular Diseases / epidemiology*
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Cardiovascular Diseases / etiology
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Child
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Female
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HLA-B27 Antigen / blood
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Humans
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Male
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Ontario / epidemiology
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Prevalence
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Prospective Studies
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Rheumatoid Factor / blood
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Spondylitis, Ankylosing / complications*
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Spondylitis, Ankylosing / diagnosis
Substances
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Antibodies, Antinuclear
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HLA-B27 Antigen
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Rheumatoid Factor