1. Centers for Disease Control and Prevention Web site. Safe Motherhood: Promoting health for women before, during, and after pregnancy www.cdc.govnccdphppublicationsaagpdfdrh.pdf
2. Deaths: Final data for 2005;Kung;Natl Vital Stat Rep,2008
3. Births: Final data for 2005;Martin;Natl Vital Stat Rep,2007