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The Anatomical Therapeutic Chemical (ATC) classification system
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Level 5
  
G - Genito urinary system and sex hormonesG03 - Sex hormones and modulators of the genital systemG03E - Androgens and female sex hormones in combinationG03EA - Androgens and estrogensG03EA03 - Prasterone and estrogen
  
Prasterone and estrogen
  
 
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