Andra H. James, MD, MPH
James AH. Contraceptive transdermal patches or vaginal rings were associated with increased venous thrombosis. Ann Intern Med. 2012;157:JC4–10. doi: https://doi.org/10.7326/0003-4819-157-8-201210160-02010
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Published: Ann Intern Med. 2012;157(8):JC4-10.
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