1. United Nations Population Division, http://esa.un.org/unpd/wpp/Excel-Data/population.htm , accessed on 19/01/2014
2. Ferlay J, Soerjomataram I, Ervik M, et al (2013) GLOBOCAN 2012 v1.0, Cancer Incidence and Mortality Worldwide: IARC Cancer Base No. 11 [Internet]. Lyon, France: International Agency for Research on Cancer. Available from: http://globocan.iarc.fr , accessed on 19/01/2014
3. Forman D, Bray F, Brewster DH, et al (eds) (2013) Cancer Incidence in Five Continents, Vol. X (electronic version), Lyon, IARC. http://ci5.iarc.fr , last accessed on 19/01/2014
4. Curado MP, Voti L, Sortino-Rachou AM (2009) Cancer registration data and quality indicators in low and middle income countries: their interpretation and potential use for the improvement of cancer care. Cancer Causes Control 20:751–6
5. Global initiative for cancer registry development-GICR, http://gicr.iarc.fr/ , accessed on 19/01/2014