Key references: Overview of intrauterine contraceptive devices
Contraception: an Australian clinical practice handbook. 4th Ashfield, New South Wales: Family Planning New South Wales, Family Planning Victoria, and True Relationships and Reproductive Health; 2016.
Barbosa I, Olsson SE, Odlind V, Goncalves T, Coutinho E. Ovarian function after seven years' use of a levonorgestrel IUD. Adv Contracept 1995;11(2):85–95. https://www.ncbi.nlm.nih.gov/pubmed/7491859
Gemzell-Danielsson K, Schellschmidt I, Apter D. A randomized, phase II study describing the efficacy, bleeding profile, and safety of two low-dose levonorgestrel-releasing intrauterine contraceptive systems and Mirena. Fertil Steril 2012;97(3):616-22 e1-3. https://www.ncbi.nlm.nih.gov/pubmed/22222193
Goldthwaite LM, Creinin MD. Comparing bleeding patterns for the levonorgestrel 52 mg, 19.5 mg, and 13.5 mg intrauterine systems. Contraception 2019;100(2):128–31. https://www.ncbi.nlm.nih.gov/pubmed/31051118
