1. Monitoring the Future—National Results on Adolescent Drug Use: Overview of Key Findings, 2011. 2013; http://www.monitoringthefuture.org/pubs/monographs/mtf-overview2011.pdf . Accessed October 18, 2013.
2. Kalant H. Adverse effects of cannabis on health: an update of the literature since 1996. Prog Neuropsychopharmacol Biol Psychiatry. 2004;28(5):849–63.
3. Bronstein AC, Spyker DA, Cantilena LR Jr, Green JL, Rumack BH, Dart RC. 2010 Annual Report of the American Association of Poison Control Centers' National Poison Data System (NPDS): 28th Annual Report. Clin Toxicol (Phila). 2011;49(10):910–41.
4. News from DEA, Domestic Field Divisions, Washington DC News Releases, 11/24/10. DEA Moves to Emergency Control Synthetic Marijuana 2013; http://www.justice.gov/dea/pubs/pressrel/pr112410.html . Accessed October 18, 2013.
5. News from DEA, News Releases, 09/07/11. DEA Moves to Emergency Control Synthetic Stimulants 2013; http://www.justice.gov/dea/pubs/pressrel/pr090711p.html . Accessed October 18, 2013.