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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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