No abstract available
MeSH terms
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Arthritis, Rheumatoid / epidemiology*
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Arthritis, Rheumatoid / prevention & control
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Contraceptives, Oral / pharmacology*
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Contraceptives, Oral, Synthetic / pharmacology*
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Female
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Humans
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Minnesota
Substances
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Contraceptives, Oral
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Contraceptives, Oral, Synthetic