BACKGROUND
The effect of cannabis legalization in Canada (in October 2018) on the prevalence of injured drivers testing positive for tetrahydrocannabinol (THC) is unclear.
For more: https://www.nejm.org/doi/full/10.1056/NEJMsa2109371?query=TOC
The effect of cannabis legalization in Canada (in October 2018) on the prevalence of injured drivers testing positive for tetrahydrocannabinol (THC) is unclear.
For more: https://www.nejm.org/doi/full/10.1056/NEJMsa2109371?query=TOC