Prognostic impact of log odds of positive lymph nodes (LODDS) in the stratification of patients with rectal cancer Vincenzo Vigorita; Oscar Cano-Valderrama; Raquel Sánchez-Santos; Marta Paniagua-Garcia-Señorans; Enrique Moncada; Gianluca Pellino; Jesús Paredes-Cotoré; Enrique Casal;