No abstract available
Publication types
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Research Support, U.S. Gov't, Non-P.H.S.
MeSH terms
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Adolescent
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Adult
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Age Factors
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Child
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Female
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HLA Antigens / analysis
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HLA-B27 Antigen
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Humans
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Male
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Middle Aged
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Puberty
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Retrospective Studies
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Sex Factors
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Spondylitis, Ankylosing / diagnosis*
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Spondylitis, Ankylosing / etiology
Substances
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HLA Antigens
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HLA-B27 Antigen