The publication of a paper denying the link between HIV and AIDS in an Italian anatomy journal has prompted a member of its editorial board to resign in protest. ...
The paper’s lead author, Peter Duesberg of the University of California, Berkeley, is well known for denying the link between HIV and AIDS, and six of the paper's nine authors, including Duesberg, are on the board of Rethinking AIDS, a voluntary group campaigning for “scientific reappraisal of the HIV–AIDS hypothesis”.
The paper is a reworked version of one published in the journal Medical Hypotheses in 2009, which at that time did not use peer review. Following a storm of protest, publisher Elsevier sent the paper to five external reviewers, and it was unanimously rejected. Elsevier permanently withdrew the paper on grounds of quality and concern for public heath²....

Article from http://www.nature.com/news/paper-denying-hiv-aids-link-sparks-resignation-1.9926.

I realized that those not in the field of research may not be as familiar with this, but as my professors like to tell me, just because it's published, doesn't mean it's true. You have to pay attention to both where it's published, because not all publications are equally trustworthy, especially in this age of internet, and you also have to pay attention to the actual data, because believe it or not, even for journals like Nature and Science, the retraction rate is fairly high (especially since the name-brand journals tend to publish on what research is "hot" and not necessarily on what's the most robust).