Studies of the benefits of human milk in premature infants to date have predominantly compared mother’s own milk to premature infant formula. Whether pasteurized donor human milk (which generally is provided by women who delivered at term) provides similar or superior protection is unclear. In premature infants receiving only mother’s own milk or pasteurized donor human milk (no formula), increasing amounts of mother’s own milk correlate with better weight gain and less NEC.42 A meta-analysis in 2007 concluded that formula feeding was associated with both increased short term growth and increased incidence of NEC compared to donor human milk feeding (RR 2.5 (95% CI 1.2, 5.1), number needed to harm 33 (95% CI 17, 100)) with no differences in long term growth