trastuzumab based treatment
doxorubicin plus cyclophosphamide followed by docetaxel plus trastuzumab
Comparator:  vs docetaxel plus carboplatin with trastuzumab followed by trastuzumab;   vs doxorubicin plus cyclophosphamide followed by docetaxel; 
Risk of bias:  low;   some concerns;   high;  NA;