No abstract available
MeSH terms
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Cohort Studies
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Contraceptive Agents, Female / administration & dosage*
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Contraceptive Agents, Female / therapeutic use
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Contraceptive Devices, Female
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Contraceptives, Oral / therapeutic use
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Delayed-Action Preparations
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Drug Implants*
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Female
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Humans
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Intrauterine Devices, Copper / statistics & numerical data
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Intrauterine Devices, Medicated / statistics & numerical data*
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Levonorgestrel / administration & dosage
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Levonorgestrel / therapeutic use
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Medroxyprogesterone Acetate / administration & dosage*
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Medroxyprogesterone Acetate / therapeutic use
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Pregnancy
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Pregnancy, Ectopic / epidemiology*
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Proportional Hazards Models
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Prospective Studies
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Transdermal Patch
Substances
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Contraceptive Agents, Female
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Contraceptives, Oral
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Delayed-Action Preparations
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Drug Implants
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Levonorgestrel
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Medroxyprogesterone Acetate
Associated data
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ClinicalTrials.gov/NCT00635492