The progestin-only pills and the levonorgestrel-releasing IUD: two progestin-only contraceptives.
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Family Health International Research Triangle Park, North Carolina 27709, USA.
D000284:Administration, Oral; D002986:Clinical Trials as Topic; D003271:Contraceptive Agents, Female / Q000008:administration & dosage / Q000009:adverse effects / Q000592:standards*; D005260:Female; D006801:Humans; D007436:Intrauterine Devices, Medicated / Q000009:adverse effects / Q000592:standards*; D016912:Levonorgestrel / Q000008:administration & dosage / Q000009:adverse effects / Q000592:standards*; D011247:Pregnancy; D018873:Pregnancy Rate; D045167:Progesterone Congeners / Q000008:administration & dosage / Q000009:adverse effects / Q000592:standards*
D003271:Contraceptive Agents, Female; D045167:Progesterone Congeners; D016912:Levonorgestrel