Biologic Determinants of Tumor Recurrence in Stage II Colon Cancer: Validation Study of the 12-Gene Recurrence Score in Cancer and Leukemia Group B (CALGB) 9581 Venook, Alan P. , Niedzwiecki, Donna , Lopatin, Margarita , Ye, Xing ... - - J. Clin. Oncol. - 2013 Manuscript - Secondary - Primary - GI - C9581 , C150705