Data support extended use of levonorgestrel intrauterine systems.
Mansour
D
D
Guillebaud
J
J
D003271:Contraceptive Agents, Female / Q000008:administration & dosage*; D005260:Female; D006801:Humans; D007436:Intrauterine Devices, Medicated; D007880:Legislation, Drug; D016912:Levonorgestrel / Q000008:administration & dosage*; D006113:United Kingdom
D003271:Contraceptive Agents, Female; D016912:Levonorgestrel