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This prospective cohort study followed a group of children from before birth until adulthood

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No Smoking Signs Help You Enforce Smoking Prohibition No Smoking Signs Come in Different Designs Cigarette smoking in public places may have an impact on air quality or create a fire hazard

Monitoring The study monitor will conduct monitoring visits at each site according to the following schedule: the Study Initiation Visit will occur at each site after obtaining all regulatory approvals (REB, NOL, etc.) but prior to enrolment of the first research participant

A number of previous studies reported the harmful effect of cigarette smoking and passive smoking on mortality 41,42,43