Cigarette smoking before and after an excise tax increase and an antismoking campaignMassachusetts, 19901996
Although we tried to broadly distribute the questionnaire using diverse platforms, and self-help groups for the different diseases, the respondents may not be fully representative of the CBD consumers in the German population (selection bias)
This allows for up to 50,000 puffs, translating to 2,500 puffs per milliliter of e-liquid
Pipes are easier to clean Summary: Pipes require much less time, material, and effort to clean making pipes much easier to clean than bongs
Additionally, vape pens require less maintenance compared to more advanced vaping devices, with components like coils and cartridges being easily replaceable