After a median follow-up of @ years ( interquartile range -LSB- IQR -RSB- @-@ ) , @ ( @ % ) of @ patients given EC-P every @ weeks , @ ( @ % ) of @ patients given FEC-P every @ weeks , @ ( @ % ) of @ patients given EC-P every @ weeks , and @ ( @ % ) of @ patients given FEC-P every @ weeks had a disease-free survival event .