On a downer.
D002188:Cannabis / Q000009:adverse effects; D055317:Evidence-Based Practice; D040261:Harm Reduction; D006801:Humans; D008385:Marijuana Smoking / Q000009:adverse effects / Q000453:epidemiology / Q000331:legislation & jurisprudence* / Q000517:prevention & control; D011640:Public Policy; D012106:Research; D014480:United Nations / Q000331:legislation & jurisprudence*