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We can measure the length of their puff, the puff volume

Food Engineering Reviews, Volume 3, 2011
23 Greater use of e-cigarettes was associated with reduced smoking, toxicant exposure and increased days abstinent

If youre a smoker, you probably have your favorite brand of cigarettes
A spray or inhaler is used for 8-40 doses per day, with each dose consisting of one spray in each nostril

After the operation, the animals were raised separately and were allowed to recover for 2 weeks
