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Concept of estrogenicity with combined oral contraceptives. CMA, chlormadinone acetate; CPA, cyproterone acetate; DNG, dienogest; DRSP, drospirenone; DSG, desogestrel; EE, ethinylestradiol; E2, estradiol; E2V, estradiol valerate; E4, estetrol; GSD, gestodene; LNG, levonorgestrel; NETA, norethisterone acetate; NGM, norgestimate; NOMAC, nomegestrol acetate.
