The increased risk of venous thromboembolism and the use of third generation progestagens: role of bias in observational research. The Transnational Research Group on Oral Contraceptives and the Health of Young Women

MA Lewis, LA Heinemann, KD MacRae, R Bruppacher, WO Spitzer, Charles Mccollum

    Research output: Contribution to journalArticlepeer-review

    Original languageEnglish
    JournalContraception
    Volume54
    Publication statusPublished - 1996

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