1. Global cancer statistics;Parkin;CA Cancer J Clin,2002
2. 2 ACCP, PRB. Preventing Cervical Cancer Worldwide; A Joint Report Produced by the Population Reference Bureau (PRB) and ACCP. Seattle, WA: Alliance for Cervical Cancer Prevention, 2004 [www.alliance-cxca.org/english/publications.html#cciid]. Accessed 24 October 2005.
3. How to obtain an accurate pap smear;Hicks;Med Aspects Hum Sex,1991
4. The cervical cancer epidemic that screening has prevented in the UK;Peto;Lancet,2004