No abstract available
MeSH terms
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Age Factors
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Breast Neoplasms / chemically induced*
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Contraceptives, Postcoital / adverse effects*
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Drug Approval*
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Female
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Health Services Accessibility / legislation & jurisprudence
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Humans
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Levonorgestrel / adverse effects*
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Multiple Sclerosis / chemically induced*
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Nonprescription Drugs / adverse effects*
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Politics
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United States
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United States Food and Drug Administration*
Substances
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Contraceptives, Postcoital
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Nonprescription Drugs
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Levonorgestrel