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Wu M, Eisenberg R, Negassa A, Levi E.Wu M, et al.Contraception. 2020 Dec;102(6):409-413. doi: 10.1016/j.contraception.2020.08.016. Epub 2020 Sep 10.Contraception. 2020.PMID: 32918870
Pearlman Shapiro M, Avila K, Levi EE.Pearlman Shapiro M, et al. Among authors: levi ee.BMC Pregnancy Childbirth. 2022 Feb 25;22(1):154. doi: 10.1186/s12884-022-04451-2.BMC Pregnancy Childbirth. 2022.PMID: 35216562Free PMC article.
Benfield N, Hawkins F, Ray L, McGowan A, Floyd K, Africa D, Barreto M, Levi E.Benfield N, et al.Contraception. 2018 May;97(5):411-414. doi: 10.1016/j.contraception.2018.01.017. Epub 2018 Feb 8.Contraception. 2018.PMID: 29428850
Stifani BM, Avila K, Levi EE.Stifani BM, et al. Among authors: levi ee.Contraception. 2021 Mar;103(3):157-162. doi: 10.1016/j.contraception.2020.11.006. Epub 2020 Nov 17.Contraception. 2021.PMID: 33212033
Stuart GS, Lesko CR, Stuebe AM, Bryant AG, Levi EE, Danvers AI.Stuart GS, et al. Among authors: levi ee.Contraception. 2015 Apr;91(4):284-8. doi: 10.1016/j.contraception.2014.12.009. Epub 2014 Dec 29.Contraception. 2015.PMID: 25553871Clinical Trial.
Stifani BM, Smith A, Avila K, Boos EW, Ng J, Levi EE, Benfield NC.Stifani BM, et al. Among authors: levi ee.Contraception. 2021 Sep;104(3):254-261. doi: 10.1016/j.contraception.2021.04.006. Epub 2021 Apr 20.Contraception. 2021.PMID: 33861981Free PMC article.