A.Mirena (levonorgestrel-releasing intrauterine system) is an estrogen-free intrauterine contraceptive (IUC) that delivers small amounts of hormone directly to the uterus.

 
  • 答: mirena (左炔诺孕酮释放宫内系统)是一种雌激素-免费宫内避孕( iuc ) ,提供少量的激素,直接向子宫。
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