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[2] In 1998, amidst growing evidence against tobacco companies, especially after the release of several industry documents, and growing public attitudes against smoking, states and tobacco companies entered a Master Settlement Agreement

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You may notice some slight stains on the cigarette paper

The unit is also remarkably energy-efficient

To verify the data obtained from the topography device, participants will self-report the number of cigarettes they smoked during the 24-hour pack exposure, details of any cigarettes not smoked from the pack given to them or through the monitor, and any unusual events about the previous day (other than taking part in the experiment) which may have changed their smoking behavior