1. Ferlay J, Soerjomataram I, Ervik M, Dikshit R, Eser S, Mathers C, Rebelo M, Parkin DM, Forman D, Bray F: GLOBOCAN. 2012, [http://globocan.iarc.fr], v1.0, Cancer Incidence and Mortality Worldwide: IARC CancerBase No. 11
2. American Cancer Society: Cancer in Africa. [http://www.cancer.org/acs/groups/content/@epidemiologysurveilance/documents/document/acspc-031574.pdf]
3. De Martel C, Ferlay J, Franceschi S, Vignat J, Bray F, Forma D, Plummer M: Global burden of cancers attributable to infections in 2008: a review and synthetic analysis. Lancet Oncol. 2012, 13: 607-615. 10.1016/S1470-2045(12)70137-7.
4. World Health Organization: Ten Facts on HIV/AIDS. [http://www.who.int/features/factfiles/hiv/en/index.html]
5. Tanzania HIV/AIDS and Malaria Indicator Survey. 2011, [http://dhsprogram.com/pubs/pdf/AIS11/AIS11.pdf], -2012