No abstract available
MeSH terms
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Adolescent
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Adult
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Dose-Response Relationship, Drug
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Ethinyl Estradiol / administration & dosage*
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Ethinyl Estradiol / adverse effects
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Female
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Humans
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Middle Aged
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Norgestrel / administration & dosage*
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Norgestrel / adverse effects
Substances
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Norgestrel
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Ethinyl Estradiol