California recalls cannabis vape months after it was told of contamination Los Angeles Times Young People Increasingly Use Juuls and E Cigarettes to Vape Cannabis Products What's in that vape? Cannabis & vaping PUBLIC HEALTH INSIDER Toxic metal particles can be present in cannabis vapes even before the first use American Chemical Society Vaping Medical Marijuana: All You Need to Know Is it Safe? Young Adults Mix Cannabis with Nicotine, Tobacco RT