No abstract available
MeSH terms
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Adolescent
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Adult
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Antibodies, Antinuclear / analysis
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Arthritis, Juvenile / classification
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Arthritis, Juvenile / diagnosis*
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Arthritis, Juvenile / immunology
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Child
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Child, Preschool
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Follow-Up Studies
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HLA Antigens / analysis
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HLA-B27 Antigen
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Histocompatibility Testing
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Humans
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Rheumatoid Factor / analysis
Substances
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Antibodies, Antinuclear
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HLA Antigens
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HLA-B27 Antigen
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Rheumatoid Factor