Borderline resectable pancreatic cancer: Definitions, management, and role of preoperative therapy. - Varadhachary,G.R.; Tamm,E.P.; Abbruzzese,J.L.; Xiong,H.Q.; Crane,C.H.; Wang,H.; Lee,J.E.; Pisters,P.WT.; Evans,D.B.; Wolff,R.A. (Ann Surg Onco, 2006)