↑M. M. Hassan, D. Li, A. S. El-Deeb, R. A. Wolff, M. L. Bondy, M. Davila, J. L. Abbruzzese: Association between hepatitis B virus and pancreatic cancer. In: Journal of clinical oncology : official journal of the American Society of Clinical Oncology. Band 26, Nummer 28, Oktober 2008, S. 4557–4562. ISSN1527-7755, doi:10.1200/JCO.2008.17.3526, PMID 18824707, PMC 2562875 (freier Volltext).