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Level 3
G - Genito urinary system and sex hormonesG03 - Sex hormones and modulators of the genital systemG03A - Hormonal contraceptives for systemic use
G03AA - Progestogens and estrogens, fixed combinationsG03AB - Progestogens and estrogens, sequential preparationsG03AC - ProgestogensG03AD - Emergency contraceptives
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