British Medical Journal (2012): Acute Cannabis Consumption and Motor Vehicle Collision Risk: A Systematic Review of Observational Studies and Meta-Analysis
Marijuana - Marijuana and Who's in Prison
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Marijuana QuickFacts - One Pager
Marijuana - Sample Testimony
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Marijuana - Public Health Organizations Position on "Medical" Marijuana
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American Society of Addiction Medicine (2011) - Medical Marijuana Task Force White Paper
Harm Reduction Journal (2007) - Long term marijuana users seeking medical cannabis in California (2001–2007)- demographics, social characteristics, patterns of cannabis and other
National Institute of Helath (2009) - Effects of Marijuana Smoking on Pulmonary Function and Respiratory Complications
Substance Abuse and Mental Health Services (SAMHSA):National Estimates of Drug-Related Emergency Visits 2008
National Institute on Drug Abuse (NIDA): Marijuana Abuse 2010
Office of National Drug Control Policy Fact Sheet - Drug Decriminalization Portugal