1. Fetal and perinatal mortality, United States, 2005;MacDorman;Natl Vital Stat Rep,2009
2. Infant mortality statistics from the 2005 period linked birth/infant death data set;Mathews;Natl Vital Stat Rep,2008
3. Explaining the 2001–02 infant mortality increase: data from the linked birth/infant death data set;MacDorman;Natl Vital Stat Rep,2005
4. Centers for Disease Control and Prevention, National Center for Health Statistics. State Definitions and Reporting Requirements for Live Births, Fetal Deaths, and Induced Terminations of Pregnancy. Hyattsville, MD: National Center for Health Statistics; 1997. Available at: www.cdc.gov/nchs/data/misc/itop97.pdf. Accessed November 8, 2010
5. Appendix D: standard terminology for reporting reproductive health statistics;American Academy of Pediatrics; American College of Obstetrics and Gynecology,2007