Khanna A, Walker GR, Livingstone AS, Arheart KL, Rocha-Lima C, Koniaris LG. Is adjuvant 5-FU-based chemoradiotherapy for resectable pancreatic adenocarcinoma beneficial? A meta-analysis of an unanswered question. J Gastrointest Surg. 2006 May; 10(5):689-97.