1. Preventing low birthweight;Institute of Medicine,1985
2. Economic evaluation of neonatal intensive care of very—low-birth-weight infants;Boyle;N Engl J Med,1983
3. Cost-benefit analysis of neonatal intensive care for infants weighing less than 1,0000 grams at birth;Walker;Pediatrics,1984
4. The cost of care of the less-than-1000-gram infant;Hernandex;Tiny Baby,1986