1. Ferlay J, Bray F, Pisani P, Parkin DM. GLOBOCAN 2002: Cancer Incidence, Mortality and Prevalence Worldwide. IARC Cancer Base No. 5 version 2.0 Lyon: IARC Press; 2004;.
2. Hamilton SR, Aaltonen LA. Pathology and Genetics of Tumours of the Digestive System Lyon: IARC Press; 2000;37-69 Available from: URL: http://www.iarc.fr/en/content/download/4484/39582/file/BB2.pdf.
3. Ministerio de Salud de Chile. Anuario de estadÃsticas de natalidad y mortalidad 1999-2004. Available from: URL: http://deis.minsal.cl/deis/ev/def2002/t12_DEFUN_ESPECIFICA.htm.
4. Bertran E, Heise K, Jofre A. Cancer Incidence in Chile (1998-2002). Cancer Incidence in Five Continents Lyon: IARC Press; 2007; Available from: URL: http://www.iarc.fr/en/Publications/PDFs-online/Cancer-Epidemiology/IARC-Scientific-Publication-No.-155.
5. Welch HG, Black WC. Are deaths within 1 month of cancer-directed surgery attributed to cancer? J Natl Cancer Inst 2002;94:1066-1070.