Usually—and I think Matt will agree with this—when studies are published, for example, or when people are speaking, they declare any conflicts of interest, especially with big pharma. When somebody is giving a presentation or advocating for a certain drug and it turns out that they have actually been paid or have received benefits from that company, it creates at least the appearance of a conflict of interest. Usually that has to be declared, because it has the potential to influence the conclusions they're coming to.
