1. International Agency for Research on Cancer. World Cancer Report. 2008; Lyon: International Agency for Research on Cancer, 25–26.
2. American Cancer Society. Global Cancer Facts and Figures 2007; Atlanta, GA: American Cancer Society, 1.
3. World Health Organization cancer priorities in developing countries;Ngoma;Ann Oncol,2006
4. Cancer control opportunities in low-middle income countries;Huerta;CA Cancer J Clin,2007
5. The World Cancer Declaration 2008: A call to action from the global cancer community. Geneva: International Union Against Cancer (UICC) 2008.