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Kaplan S, Bertoia ML, Wang FT, et al. Long-term safety of extended levonorgestrel-containing oral contraceptives in the United States. Contraception. 2021;105:26-32doi: 10.1016/j.contraception.2021.09.013.
Kaplan, S., Bertoia, M. L., Wang, F. T., Zhou, L., Lass, A., Evans, A., Dhanda, S., Roy, D., & Seeger, J. D. (2022). Long-term safety of extended levonorgestrel-containing oral contraceptives in the United States. Contraception, 10526-32. https://doi.org/10.1016/j.contraception.2021.09.013
Kaplan, Sigal, et al. "Long-term safety of extended levonorgestrel-containing oral contraceptives in the United States." Contraception vol. 105 (2022): 26-32. doi: https://doi.org/10.1016/j.contraception.2021.09.013
Kaplan S, Bertoia ML, Wang FT, Zhou L, Lass A, Evans A, Dhanda S, Roy D, Seeger JD. Long-term safety of extended levonorgestrel-containing oral contraceptives in the United States. Contraception. 2022 Jan;105:26-32. doi: 10.1016/j.contraception.2021.09.013. Epub 2021 Sep 30. PMID: 34599911.
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