No abstract available
Publication types
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Letter
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Multicenter Study
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Research Support, Non-U.S. Gov't
MeSH terms
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Adult
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Aged
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Antibodies, Antinuclear / blood
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Autoantibodies / blood
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Clinical Trials as Topic
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Complement C3 / metabolism*
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Complement C4 / metabolism*
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Female
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Humans
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Longitudinal Studies
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Male
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Middle Aged
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Scleroderma, Systemic / blood*
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Scleroderma, Systemic / immunology
Substances
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Antibodies, Antinuclear
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Autoantibodies
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Complement C3
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Complement C4
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anticentromere antibody