1. Infant mortality statistics from the 2002 period linked birth/infant death data set. National Vital Statistics Reports, Vol. 53, No. 10;Mathews,2004
2. Williams Obstetrics,2005
3. National Center for Health Statistics, 2000; prepared by the March of Dimes Birth Defects Foundation, 2003
4. Canadian Perinatal Health Report, 2003,2003
5. National Center for Health Statistics. Final natality data. Available at: http://www.marchofdimes/com/peristats. Accessed July 8, 2005