- WSU ending development of marijuana breath testKHQ Local News
- WSU research on marijuana breath test haltedwenatcheeworld.com
- TWhen Are You Too Stoned to Drive?themarshallproject.org
- What does marijuana legalization mean for stoned driving?The Verge
- Watch: Can a phone app tell if you're too stoned to drive?oregonlive.com
- Pot breathalyzer needed as U.S. relaxes cannabis bansThe Japan Times
- Canadian company is developing a 'breathalyzer for pot'engadget
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