I don't know of a professional organization that doesn't have a code of ethics. (Did you know the FDA does? Yes, really! It has an ethics committee. Not sure what they're doing these days, but oh well... back to topic). Any respectable code of ethics addresses conflicts of interest, professional conduct, and adherence to the organization's standards. In the case of a scientific organization, this should address open admission of who funded a study, any financial interests participating researchers have in any business that has either done the funding or who may be affected by the outcome of the study. It is also considered a breach of professional ethics to misrepresent the results of a study or to intentionally skew the study (by design or analysis) so that a particular outcome is favored.
To say that some of these studies should never have seen the light of day is a gross understatement. I despair...