Some science mags have prevented any dissenting articles or comments. Universities have pulled tenure of professors/scientist that not only dissent, but in some cases, have dissented in only one area of the subject. And there's been a call for incarceration (and in some cases execution) of dissenters.
In tobacco and ecigarettes, we've seen the first step - refusing and scrubbing dissenting articles and comments.
OK, I'll bite. Please cite specifics here. Where, when, who, date, article, university, etc.? Both the first part regarding universities and the second part about e-cigarette research that's been refused or scrubbed.
It takes a lot to pull tenure from a professor at a US university. Is it done? Yes, but rarely and for far more than dissenting on a popular view of other faculty members. If a professor started saying evolution is untrue, that we were all created from Adam's rib, or started denying the Holocaust, then he would probably lose his tenure. If a dissenting view is supported by good, well documented research I can't see other faculty members calling for someone's tenure just for the fact that they have a different viewpoint. Peer review is just that, a review of research by others knowledgeable in the the specific field. Again, if an article is rejected it is not due to the fact that it dissents from a popular viewpoint, but rather due to shoddy research design and leaps of logic that are not supported by the evidence. If you are going to go against accepted theories based on years of research, you had best back up your dissent with good research that supports your dissenting view. The scientific community has always worked this way. While it may make it difficult for dissenting views to be heard, it provides a stability and cohesion to research that would not be there if every theory is given equal weight and discussion. And if a person's dissenting view is presented with solid research and explanations, others will take it on and see if those results can be duplicated. If they are duplicated, eventually the scientific community is forced to accept the new viewpoint. Are some dissenting theories rejected by the scientific community? Absolutely, but due mostly to the fact that it's just poorly designed, executed, and written research, not because of any conspiracy.
I just think that there are enough roadblocks to researching e-cigarettes, that the viewpoint that there is a conspiracy keeping down good research serves no one. We are at the beginning of something brand new. It is such a new technology, that's changing every day, that there are no established parameters for research. Good research, well done will have a voice. Dr. Farsalinos is a good example of that.