1. Transitions in World Population (Population;Bureau, Population Reference;Bulletin,2004
2. Health and Clinical Excellence (NICE). Longacting Reversible Contraception (CG30). 2005;[17 January 2008].
3. How do health care professionals respond to advice on adverse side effects of contraceptive methods? The case of Depo Provera®;Glasier, A.; Yan, Y.; Wellings, K.;Contraception,2007
4. Attitudes towards long-acting reversible methods of contraception in general practice in the UK;Wellings, K.; Zhihong, Z.; Krentel, A.; Barrett, G.; Glasier, A.;Contraception,2007
5. Contraception and Sexual Health 2005/06 (Omnibus Survey Report No. 30). 2006;Taylor, T.; Keyse, L.; Bryant, A.