Columbia subject headings:
Birth weight, Low--United States.
Neonatal intensive care--United States--Cost.
Pediatric intensive care--United States.
Harvard subject headings:
Birth weight, Low--Economic aspects--United States.
Neonatal intensive care--United States--Costs.
Princeton subject headings:
Birth weight, Low--Economic aspects--United States.
Neonatal intensive care--United States--Costs.