No abstract available
MeSH terms
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Adult
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Antibodies, Bacterial / blood*
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Arthritis, Rheumatoid / immunology
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Arthritis, Rheumatoid / microbiology
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Campylobacter / immunology*
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Chlamydia trachomatis / immunology*
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Humans
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Middle Aged
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Spondylitis, Ankylosing / immunology*
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Spondylitis, Ankylosing / microbiology*
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Yersinia / immunology*