1. National household survey on drug abuse: population estimates 1994;Gfroerer,1995
2. Substance abuse in pregnancy: a bigger problem than you think;King;Post Med,1997
3. Substance Abuse and Mental Health Services Administration. Planned methadone treatment for heroin admissions. Drug and Alcohol Services Information System. The DASIS Report, 2003. Retrieved from: http://www.samsha.gov/oas/2k3/methadoneHtx/methadoneHtx.htm. Accessed Jan 21, 2004.
4. Fetal stress from methadone withdrawal;Zuspan;Am J Obstet Gynecol,1975
5. The narcotic dependent mother: fetal and neonatal consequences;Kandall;Early Hum Develop,1977