1. Ferlay J, Shin HR, Bray F, Forman D, Mathers C, Parkin DM. GLOBOCAN 2008 v1.2, Cancer Incidence and Mortality Worldwide: IARC CancerBase No. 10. Lyon: International Agency for Research on Cancer; 2010. Available at: http://globocan.iarc.fr (last accessed April 2013).
2. Clinical trials of cancer screening in the developing world and their impact on cancer healthcare;Sankaranarayanan;Ann Oncol,2011
3. Changing cancer incidence in Kampala, Uganda, 1991-2006;Parkin;Int J Cancer,2010
4. Human papillomavirus is a necessary cause of invasive cervical cancer worldwide;Walboomers;J Pathol,1999
5. IARC. IARC Monographs on the Evaluation of Carcinogenic Risks to Humans - Human Papillomaviruses. IARC Monographs, Volume 90. Lyon: International Agency for Research on Cancer; 2007.