Chemotherapy consisted of oxaliplatin @ mg/m ( @ ) intravenously over @ h and fluorouracil bolus @ mg/m ( @ ) intravenously over @ min , followed by a @ h infusion of fluorouracil @ mg/m ( @ ) repeated every @ weeks ( regimen one ) or oxaliplatin @ mg/m ( @ ) intravenously over @ h and oral capecitabine @ mg/m ( @ ) twice daily on days @-@ repeated every @ weeks ( regimen two ) .