1. American Cancer Society. Cancer facts and figures 2014. Available at: http://www.cancer.org/research/cancerfactsstatistics/cancerfactsfigures2014/
2. Cancer incidence, survival and mortality: explaining the concepts;Ellis;Int J Cancer,2014
3. Cancer Research UK. Trends in world mortality. Available at: http://www.cancerresearchuk.org/cancer-info/cancerstats/world/mortality/#Trends
4. Cancer epidemiology: principles and methods;dos Santos Silva,1999
5. Cancer overdiagnosis and overtreatment;Klotz;Curr Opin Urol,2012