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Sample size calculations were based on preliminary Dyspnoea-12 score differences with an anticipated effect size of d=0.5, derived from preliminary data and previous literature on respiratory symptoms in young adult populations 16,17 , alpha level of 0.05, and power of 1-=0.90, accounting for a 10% attrition rate, yielding a requirement of approximately 60 participants per group

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Smokers love its flavor customization and smooth, light profile, making it a top pick for tropical cigarette enthusiasts seeking variety

NEW YORK, NY - SEPTEMBER 27: Actress Christina Ricci holding a cigarette in from of a no smoking propane sign

It might not be as harmful as burning tobacco leaves, but it might not be completely benign, either, says Dr