Exclusive Human-milk in Preterm NEOnates and Early VASCular Aging Risk Factors (NEOVASC)

"Premature infants are randomized to either:~1. An exclusive human milk diet which contains mother's milk or pasteurized donor human milk and the human milk fortifier until 36 weeks of gestation; OR~2. Human milk (as long as available) and the human milk fortifier (as long as human milk is available) until a maximum of 32 weeks of gestation and thereafter human milk with a bovine-based fortifier or preterm formula.~After 36 weeks of gestation, human milk with a bovine-based fortifier or preterm formula is used in both groups. As a control group, term-born age-matched controls are included."