Dose Density FU 75 and FU 90 as Adjuvant Therapy for Early Breast Cancer

"Fluorouracil 500mg/m2 by i.v. bolus or infusion. Epirubicin 75mg/m2 by 30 minutes i.v infusion and Cyclophosphamide 500mg/m2 by i.v bolus or infusion. All three drugs will be administered intravenously on Day 1 of each 14-day cycles.~Arm B: the FEC90 regimen will be given at the following doses:~Fluorouracil 500mg/m2 by i.v. bolus or infusion.Epirubicin 90mg/m2 by 30 minutes i.v infusion and Cyclophosphamide 500mg/m2 by i.v bolus or infusion.~All three drugs will be administered intravenously on Day 1 of each 14-day cycles.~Pegfilgrastim fixed dose of 6mg as a single subcutaneous injection will be given in both arms on Day 2 of each cycle.~Six cycles of adjuvant chemotherapy will be administered in both arms (A + B"