In fact in the '50s the Drug Trust had one of its directors on the directorate of the Associated Press. He was no less than Arthur Hays Sulzberger, publisher of the New York Times and as such one of the most powerful Associated Press directors.
It was thus easy for the Rockefeller Trust to persuade the Associated Press Science Editor to adopt a policy which would not permit any medical news to clear that is not approved by the Drug Trust 'expert', and this censor is not going to approve any item that can in any way hurt the sale of drugs.