Nevertheless, while stratification by smoking status is important for interpretations of inequalities in vaping, stratification can also introduce a phenomenon known as collider bias [36, 37], which can arise when conditioning on a variable that is determined by both the exposure of interest and other variables that determine the outcome of interest
Instead of standard cotton wicks that can burn or degrade, the alternative
Asked about the convening of the review committee, he said it was formed to ensure consultation between ministries on the issue, a move he described as a fundamental requirement of good policy-making
It did not impress us in the smoke detection test
One Fantastic Four comic shows Doctor Doom blowing smoke rings
Tom Mullica was the world's greatest bar magician