No abstract available
MeSH terms
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ABO Blood-Group System*
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Adult
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Contraceptives, Oral / adverse effects
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Female
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Humans
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Pregnancy
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Pregnancy Complications, Cardiovascular / epidemiology
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Puerperal Disorders / epidemiology
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Sweden
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Thromboembolism / chemically induced
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Thromboembolism / epidemiology*
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United Kingdom
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United States
Substances
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ABO Blood-Group System
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Contraceptives, Oral