1. Rees M Stevenson J Hope S (2011) Management of the menopause. (CRC Press, Boca Raton, FL), 5th edn.
2. Premature menopause — meeting the needs;Shah;Post Reproductive Health,2014
3. FSRH Clinical Effectiveness Unit (2010) Contraception for women aged over 40 years. Clinical Guidance, http://www.fsrh.org/pdfs/ContraceptionOver40July10.pdf (accessed 6 Aug 2015).
4. FSRH Clinical Effectiveness Unit Combined hormonal contraception. Clinical Guidance 2011 (update 2012). http://www.fsrh.org/pdfs/CEUGuidanceCombinedHormonalContraception.pdf (accessed 27 Jul 2015).
5. National Institute for Health and Care Excellence , Long acting reversible Contraception (NICE Clinical Guideline 30). 2005 (update 2013). http://www.nice.org.uk/CG030NICE (accessed 28 Jul 2015).