Klint, Åsa, Engholm, G., Storm, H. H., Tryggvadóttir, L., Gislum, M., Hakulinen, T., & Bray, F. (2010). Trends in survival of patients diagnosed with cancer of the digestive organs in the Nordic countries 1964–2003 followed up to the end of 2006. Acta Oncologica, 49(5), 578–607. https://doi.org/10.3109/02841861003739330