1. Costs of newborn care in California: a population-based study;Schmitt;Pediatrics,2006
2. An overview of mortality and sequelae of preterm birth from infancy to adulthood;Saigal;Lancet,2008
3. Prospective risk of unexplained stillbirth in singleton pregnancies at term: population based analysis;Cotzias;BMJ,1999
4. ACOG Practice Bulletin. Clinical management guidelines for obstetricians-gynecologists. Number 55, September 2004. Management of Postterm Pregnancy;ACOG Committee on Practice Bulletins;Obstet Gynecol,2004