Jemal, A; Bray, F; Center, MM; Ferlay, J; Ward, E; Forman, D. Global cancer statistics.. CA: A Cancer Journal for Clinicians. 2011, 61 (2): 69–90. PMID 21296855. doi:10.3322/caac.20107.
nih.gov
ncbi.nlm.nih.gov
Jemal, A; Bray, F; Center, MM; Ferlay, J; Ward, E; Forman, D. Global cancer statistics.. CA: A Cancer Journal for Clinicians. 2011, 61 (2): 69–90. PMID 21296855. doi:10.3322/caac.20107.