Instead of whining about the tobacco companies evading the FDA tobacco law by using colors to denote the brands formerly known as "lights" or "milds," the Campaign for Tobacco-Free Kids and the other major anti-smoking groups should be apologizing to its constituents and to the public for knowingly crafting legislation that would not accomplish its declared purpose.

The problem is that in this cross-sectional study, there is no way to determine the direction of the observed relationship.

Clive's letter begins as follows:

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