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The European Tobacco Products Directive says: 'Electronic cigarettes can develop into a gateway to nicotine addiction and ultimately traditional tobacco consumption, as they mimic and normalise the action of smoking

A large white vinyl Sofa Foot , 1968-2013, and a round plastic Eye Lamp , 1969-2013, evoking a planet, represent the Pop era in visual as well as material aspects

But what does research show about the effect of smoking marijuana on the heart

Most laboratory models of tobacco smoke related lung disease result in mild-to-moderate emphysema, but with little or no evidence of chronic bronchitis, a large component of COPD in humans