1. Neonatal intensive care and stress;Walker;Arch Dis Child,1982
2. Newborn risk factors and costs of neonatal care;Phibbs;Pediatrics,1981
3. Frequency and clinical description of high-cost patients in 17 acute care hospitals;Schroeder;N Engl J Med,1979
4. Iatrogenic hazards in the newborn intensive care unit;Haas,1980