NCCTG A Randomized Phase III Trial of Oxaliplatin (OXAL) plus 5-Fluorouracil (5-FU)/Leucovorin (CF) with or without Cetuximab (C225) after Curative Resection for Patients with Stage III Colon Cancer Adult CIRB - Late Phase Emphasis Closed to Accrual. Pts Have Completed Intervention Available to Open