title: Confusion over electronic cigarettes continues.
mesh_terms: D006801:Humans; D009538:Nicotine / Q000008:administration & dosage*; D062789:Tobacco Products; D061485:Tobacco Use Cessation Devices; D014481:United States; D014486:United States Food and Drug Administration; D014835:Volatilization
chemical_list: D009538:Nicotine