title: Data support extended use of levonorgestrel intrauterine systems.
authors.forename: D
authors.initials: D
authors.lastname: Mansour
authors.forename: J
authors.initials: J
authors.lastname: Guillebaud
mesh_terms: 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
chemical_list: D003271:Contraceptive Agents, Female; D016912:Levonorgestrel