SGA infants ( z-score < -1.28 ) of gestational age ( GA ) 32-36 weeks and birth weight ( BW ) > 1499 g were allocated at random to receive either a PFR , starting with 100 mL/kg/day and gradually increasing to 200 mL/kg/day by day 4 , or a standard feeding regimen , starting with 60 mL/kg/day and gradually increasing to 170 mL/kg/day by day 9 .