| Emily Jackson Return of ovulation and menses in postpartum nonlactating women: a systematic reviewEmily Jackson World Health Organization, Geneva, Switzerland Obstet Gynecol 117:657-62. 2011 Risk of venous thromboembolism during the postpartum period: a systematic reviewEmily Jackson Department of Reproductive Health and Research, World Health Organization, Geneva, Switzerland Obstet Gynecol 117:691-703. 2011 Controversies in postpartum contraception: when is it safe to start oral contraceptives after childbirth?Emily Jackson Department of Reproductive Health and Research, World Health Organization, Geneva, Switzerland Thromb Res 127:S35-9. 2011
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