Chemotherapy consisted of oxaliplatin 85 mg/m ( 2 ) intravenously over 2 h and fluorouracil bolus 400 mg/m ( 2 ) intravenously over 5 min , followed by a 46 h infusion of fluorouracil 2400 mg/m ( 2 ) repeated every 2 weeks ( regimen one ) or oxaliplatin 130 mg/m ( 2 ) intravenously over 2 h and oral capecitabine 1000 mg/m ( 2 ) twice daily on days 1-14 repeated every 3 weeks ( regimen two ) .