Haha...go to med school, you'll understand how dumb this article is. I have neither the time nor inclination to supply an article for you. That is like telling me to supply an article that the moon landing actually occured, or that air contains oxygen.
The fact that some bogus article disputes the scientific fact that the spread of aids is caused in part by unsafe vaginal sex, does nothing to "prove" anything. This is simply absurd.
Then allow me to be honest for you and admit that you cannot.
Well, considering that atomic theory is "only a theory", I think that we should teach the controversy on this one.