Ingelfinger rule
In scientific publishing, the Ingelfinger rule stipulates that The New England Journal of Medicine would not publish findings that had been published elsewhere, in other media or in other journals. Many scientific journals followed suit after it was first enunciated in 1969 by Franz J. Ingelfinger. In a defense of the policy, the journal said in an editorial that the practice discouraged scientists from talking to the media before their work was peer reviewed.