1. Greenlee RT, Hill-Harmon MB, Murray T, Thun M (2001) Cancer statistics. CA Cancer J Clin 51(1):15–36
2. Parkin DM, Muir CS (1992) Cancer incidence in five continents. Comparability and quality of data. IARC Sci Publ 120:45–173
3. Ahlgren JD (1996) Epidemiology and risk factors in pancreatic cancer. Semin Oncol 23(2):241–50
4. AJCC (2002) Exocrine pancreas. Cancer staging manual, 6th edn. Springer, New York, pp 157–163
5. UICC (1987) TNM classification of malignant tumors, 4th edn. Springer, New York