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Sample sizes for Figure 5 Table 6

Then, gently rotate the cigar until the edges of the wrapper turn thinly black

The filtration efficiency of a smoking article according to this construction is greater than that of a conventional smoking article in which the filter and the smoking article are of the same diameter since the smoke velocity through the filter is reduced, ensuring that the smoke stream maintains contact with the filter for a relatively longer period of time, increasing the adsorption of smoke constituents from the smoke stream onto the fibres of the filter

Many ads promoted the use of cigarettes as a tool for weight loss