Human milk and premature infants.
D002986:Clinical Trials as Topic; D005260:Female; D005527:Food, Fortified; D006801:Humans; D007225:Infant Food / Q000592:standards; D007231:Infant, Newborn; D007234:Infant, Premature / Q000254:growth & development / Q000502:physiology*; D008297:Male; D008895:Milk, Human / Q000502:physiology*; D014465:Ultrasonics