1. DeVita VT, Lawrence TS, Rosenberg SA (2011) Cancer: principles & practice of oncology: primer of the molecular biology of cancer. Wolters Kluwer Health/Lippincott Williams & Wilkins, Philadelphia
2. American Cancer Society (2011) Global cancer facts & figures, 2nd edn. American Cancer Society, Atlanta
3. Ferlay J, Soerjomataram I, Ervik M, Dikshit R, Eser S, Mathers C, Rebelo M, Parkin DM, Forman D, Bray, F (2013) GLOBOCAN 2012 v1.0, cancer incidence and mortality worldwide: IARC CancerBase No. 11 [Internet]. Lyon, International Agency for Research on Cancer. Available from:
http://globocan.iarc.fr
. Accessed on 21 Sept 2014
4. Siegel R, Ma J, Zou Z et al (2014) Cancer statistics, 2014. CA Cancer J Clin 64:9–29
5. American Cancer Society (2014) Cancer facts & figures 2014. American Cancer Society, Atlanta