SGA infants ( z-score < -@ ) of gestational age ( GA ) @-@ weeks and birth weight ( BW ) > @ g were allocated at random to receive either a PFR , starting with @ mL/kg/day and gradually increasing to @ mL/kg/day by day @ , or a standard feeding regimen , starting with @ mL/kg/day and gradually increasing to @ mL/kg/day by day @ .