1. Use of the Mirena LNG-IUS and Paragard CuT380A intrauterine devices in nulliparous women;R Lyus;Contraception,2010
2. World Health Organization (2010) Medical eligibility criteria for contraceptive use: fourth edition. Available: http://whqlibdoc.who.int/publications/2010/9789241563888_eng.pdf. Accessed 11 May 2015.
3. Centers for Disease Control and Prevention (2010) MMWR: Sexually transmitted diseases treatment guidelines 2010. Available: http://www.cdc.gov/std/treatment/2010/pid.htm. Accessed 21 October 2014.
4. Faculty of the Royal College of Obstetricians and Gynaecologists (2009) UK medical eligibility for contraceptive use. Available: http://www.fsrh.org/pdfs/UKMEC2009.pdf. Accessed 27 July 2015.
5. Health care provider attitudes and practices related to intrauterine devices for nulliparous women;CP Tyler;Obstet Gynecol,2012