No abstract available
MeSH terms
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Adolescent
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Adult
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Aged
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Antibodies, Antinuclear / blood*
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Cohort Studies
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Female
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Humans
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Male
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Middle Aged
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Retrospective Studies
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Spondylitis, Ankylosing / blood
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Spondylitis, Ankylosing / immunology*
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Sulfasalazine / adverse effects*
Substances
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Antibodies, Antinuclear
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Sulfasalazine