These patients were randomly assigned ( @:@ ) to receive either cisplatin plus gemcitabine ( cisplatin @ mg/m ( @ ) on day @ and gemcitabine @ mg/m ( @ ) on days @ and @ ) or paclitaxel plus gemcitabine ( paclitaxel @ mg/m ( @ ) on day @ and gemcitabine @ mg/m ( @ ) on days @ and @ ) given intravenously every @ weeks for a maximum of eight cycles .