Prognostic factors for disease-free survival in patients with T3-4 or N+ rectal cancer treated with preoperative chemoradiation therapy, surgery, and intraoperative irradiation

• Alvarez E, Calvo FA, Cortes J, Del Valle E, Diaz-Gonzalez Ja, Garcia-Sabrido Jl, Gomez-Espi M, Munoz-Jimenez F

• Int J Radiat Oncol Biol Phys - 2006 March; 64(4):1122–8