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Particularly as different ways of consuming cannabis grow in popularity, it will make long-term studies easier

[14] [16] As a result of these implicit and widespread health claims, the popularity of light and low-tar cigarettes grew considerably

His mother warned him of the danger of getting too close to it, pointing out the vast collection of horse hair on the crotch of Bill's pants

For example: Pack years = Packs per day multiplied by the Number of years smoked Pack years = 1.5 packs per day multiplied by 20 years = 30 pack years Examples of Pack Year Calculations Lets look at a few examples to illustrate how pack years are calculated in different scenarios