Phase II Trial to Compare the Safety of Two Chemotherapy Plus Trastuzumab Regimens as Adjuvant Therapy for HER2-positive Breast Cancer (Study P05048)

doxorubicin 60 mg/m\^2 IV push + cyclophosphamide 600 mg/m\^2 IV over 30-90 minutes given every 21 days for 4 courses (12 weeks) followed by Paclitaxel 80 mg/m\^2 IV over 60 minutes with trastuzumab 2 mg/kg IV over 30 minutes (first administration 4 mg/kg IV over 90 minutes) given weekly for 12 weeks (4 courses)

PLD 35 mg/m\^2 IV over 60 minutes + cyclophosphamide 600 mg/m\^2 IV over 30-90 minutes given every 21 days + trastuzumab 2 mg/kg IV over 30 minutes (first dose 4 mg/kg IV over 90 minutes) given once weekly for 4 courses (12 weeks) followed by Paclitaxel 80 mg/m\^2 IV over 60 minutes with trastuzumab 2 mg/kg IV over 30 minutes given weekly for 12 weeks (4 courses)