1. Deaths: Leading Causes for 2002;Anderson,2005
2. Martin JA, Hamilton BE, Menacker F, et al: Preliminary Births for 2004: Infant and Maternal Health. Hyattsville, Maryland, National Center for Health Statistics. Health E-stats. 11–15-2005.
3. Births: Final Data for 2003;Martin,2005
4. Assisted reproductive technology surveillance, United States, 2003;Wright;MMWR,2006
5. Trends in preterm birth and perinatal mortality among singletons: United States, 1989 Through 2000;Ananth;Obstet Gynecol,2005