Preoperative infusional chemoradiation and surgery with or without an electron beam intraoperative boost for advanced primary rectal cancer. - Weinstein,G.D.; Rich,T.A.; Shumate,C.R.; Skibber,J.M.; Cleary,K.R.; Ajani,J.A.; Ota,D.M. (Int J Oncol Biol Phys, 1995)