is it ok to smoke cigarettes occasionally By some estimates, about 10% of people in the Is Social Smoking Bad for
Description
SHS does not cause cancer

Other causes of bronchitis arent contagious
The Surgeon Generals report was very influential, convincing many smokers to quit and providing ammunition for advocates wishing to impose controls on the tobacco industry
The questionnaires are provided in the Supplementary file

95% CI: 1.041.32)