On what basis do you disagree with the findings?
The design of the study is very straight forward.
The chemical found in the blood is a reliable measure.
The assessment of behavioral problems was very straight-forward.
It's a very tightly structured, well executed study.
I realize that there are people who still insist that the earth is flat. But we don't normally consider their position very logical.
One can argue with this study. But to argue that the study's facts are not facts is . . . AT A MINIMUM VERY ILLOGICAL.
And, unfactual.
Simple fact "behavioral problems", whatever those may be, are subjective.
The study's facts are lies. And the antismoking movement is inherently evil. It is about gaining control over others by lying and cheating.