1. Ferlay J, Bray F, Pisani P, Parkin DM (2004) GLOBOCAN. Cancer incidence, mortality and prevalence worldwide. IARC CancerBase No. 5, version 2.0. IARC Press, Lyon.
2. Kamangar F, Dores GM, Anderson WF (2006) Patterns of cancer incidence, mortality, and prevalence across five continents: defining priorities to reduce cancer disparities in different geographic regions of the world. J Clin Oncol 24:2137–2150
3. Ferlay J, Shin HR, Bray F, Forman D, Mathers C, Parkin DM (2002) GLOBOCAN: cancer incidence, mortality and prevalence world-wide. IARC Cancer Base No. 5, version 1.0. IARC Press, Lyon.
4. Ferlay J, Shin HR, Bray F, Forman D, Mathers C, Parkin DM (2008) GLOBOCAN: cancer incidence and mortality worldwide. IARC Cancer Base No. 10, version 1.2. IARC Press, Lyon.
5. Franceschi S, Bidoli E, Herrero R, Muñoz N (2000) Comparison of cancers of the oral cavity and pharynx worldwide: etiological clues. Oral Oncol 36:106–115