Blood loss during parenchymal transection was significantly lower in the stapler transection group ( P = @ ) , as were the parenchymal transection time ( mean ( s.d. ) @ ( @ ) versus @ ( @ ) min for clamp-crushing and stapler transection groups respectively ; P < @ ) and total duration of operation ( mean ( s.d. ) @ ( @ ) versus @ ( @ ) min ; P = @ ) .