Growth of Preterm Infants Fed a Infant Milk Formula Containing High Versus Low Amounts of Beta-palmitate

Inclusion Criteria: * gestational age between 24 and 32 weeks of gestation at enrollment, * birth weight greater than 750 grams, * singleton or twin birth (no triplet or higher), * fraction of inspired oxygen lower than 0.60 at enrollment, * feasible enteral feeding, * cardiovascular stable condition, * informed consent form signed by at least one parent or legal guardian. Exclusion Criteria: * congenital malformations, genetic, metabolic and endocrine disorders, * suspicious infection at enrollment, * intrauterine growth restriction (\<10th centile) at enrollment, * maternal diabetes requiring insulin therapy, * neonatal asphyxia.