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The lawsuit against the fraudulent filter In addition to the initial deception, by the 1960s, filter ventilation holes were added to cigarettes to lower laboratory-measured tar yields, enabling manufacturers to scientifically promote light and mild filtered brands as safer alternatives

This requires careful print planning and version control during manufacturing

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Six other studies that examined similar comparisons (sample size 80837) reported on smoking cessation and reduction but were all of very low certainty.29 35 One RCT that compared nicotine e-cigarettes to NRT ( n = 135) suggested there may be a large effect of e-cigarettes on cessation (161 more per 1000, 95% CI 15 more to 785 more