[Levonorgestrel capsules: a big leap forward in intrauterine contraception].
Boissevain
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D003271:Contraceptive Agents, Female / Q000008:administration & dosage*; D004343:Drug Implants; D005260:Female; D006801:Humans; D007434:Intrauterine Devices; D016912:Levonorgestrel / Q000008:administration & dosage*; D045167:Progesterone Congeners / Q000008:administration & dosage
D003271:Contraceptive Agents, Female; D004343:Drug Implants; D045167:Progesterone Congeners; D016912:Levonorgestrel