title: The smallest preterm infants: reasons for optimism and new dilemmas.
mesh_terms: D006801:Humans; D007231:Infant, Newborn; D007234:Infant, Premature; D007235:Infant, Premature, Diseases / Q000628:therapy; D007236:Infant, Small for Gestational Age; D007362:Intensive Care Units; D009725:Nurseries, Hospital; D011379:Prognosis