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Even sealed products might be confiscated or rejected depending on their contents

On snus there were 27 publications in 2015

That assumption is dangerously wrong

The intensity of residual symptoms usually decreases in the first month

Impact of smoking on cardiovascular events in patients with coronary disease receiving contemporary medical therapy (from the Treating to New Targets [TNT] and the Incremental Decrease in End Points Through Aggressive Lipid Lowering [IDEAL] trials)

Since it might be possible that the characteristics of the case and control groups were different due to bias, we tried to reduce such bias by using propensity scoring matching