Addition of fluorouracil led to increased rates of grade @-@ neutropenia ( @ -LSB- @ % -RSB- of @ patients on FEC-P vs @ -LSB- @ % -RSB- of @ patients on EC-P ; p < @ ) , fever ( nine -LSB- @ % -RSB- vs two -LSB- @ % -RSB- ) , nausea ( @ -LSB- @ % -RSB- vs @ -LSB- @ % -RSB- ) , and vomiting ( @ -LSB- @ % -RSB- vs @ -LSB- @ % -RSB- ) .