NappoG., PerroneG., BorzomatiD., ValeriS., LuffarelliP., and CoppolaR., “Residual Tumor After Pancreaticoduodenectomy: The Impact of a Brand New Standardized Technique to Evaluate Resection Margin Status”, JOP, vol. 14, no. 5S, p. 552, Sep. 2013.