3.1. Study Population
A total of 551 infants were born <30 weeks gestation during the study period. One hundred sixty-three infants had slow growth velocity between 21 days of life and 35-week postmenstrual age (PMA). One hundred twenty-nine infants were excluded for; not meeting the inclusion criteria (All mothers were able to provide hindmilk for two weeks. Four mothers were inconsistent in providing hindmilk between two and four weeks and stopped milk fractioning after four weeks due to decreased milk volumes. 