Hmmmmm... SO can we turn that around, and say that if you DON'T smoke and get anal cancer, that NOT smoking caused it?
Geezus. Calling this dreck "junk science" is a slam on the field of junk science.
PUFF
I think you're on to something here.............
Unfortunately the Anti-smoking Nazis have that covered. If you don't smoke and get anal cancer of course it was Second hand smoke that caused you to get anal cancer.