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 Level 5
 
 G - Genito urinary system and sex hormonesG03 - Sex hormones and modulators of the genital systemG03F - Progestogens and estrogens in combinationG03FA - Progestogens and estrogens, fixed combinationsG03FA01 - Norethisterone and estrogen
 
 Norethisterone and estrogen
 
 
 
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