留美实录｜大麻是否致瘾？(5)

https://www.drugabuse.gov/publications/research-reports/marijuana/marijuana-addictive
https://www.healthline.com/health-news/marijuana-addiction-rare-but-real-072014#10
https://www.drugabuse.gov/publications/research-reports/marijuana/marijuana-gateway-drug
https://www.scientificamerican.com/article/how-safe-recreational-marijuana/
http://www.addictionjournal.org/press-releases/debunking-two-claims-about-us-medical-marijuana-increased-recreational-use-amon