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While Gawker initially refused to comply with the take-down request, they later complied after a second letter claimed it was a violation of the Digital Millennium Copyright Act

As the lesser of two evils, their argument goes, e-cigarettes could be useful in helping people quit smoking

They reported using e-cigarette products containing THC, the psychoactive ingredient in marijuana, but some had used nicotine, as well

If these conditions were met, the next stage involved conducting multivariable regressions to calculate the direct effect of the exposure on the outcome, with the mediator included as a covariate

What are the limitations of this study