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Protein binding of active ingredients and comparison of serum ethinyl estradiol, sex hormone-binding globulin, corticosteroid-binding globulin, and cortisol levels in women using a combination of gestodene/ethinyl estradiol (Femovan) or a combination of desogestrel/ethinyl estradiol (Marvelon) and single-dose ethinyl estradiol bioequivalence from both oral contraceptives.
Hümpel M, Täuber U, Kuhnz W, Pfeffer M, Brill K, Heithecker R, Louton T, Steinberg B, Seifert W, Schütt B. Hümpel M, et al. Among authors: kuhnz w. Am J Obstet Gynecol. 1990 Jul;163(1 Pt 2):329-33. doi: 10.1016/0002-9378(90)90577-t. Am J Obstet Gynecol. 1990. PMID: 2142574 Clinical Trial.
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