It references a review by Seralini et al. (them, again) entitled Genetically modified crops safety assessments: present limits and possible improvements.
The recent hullabaloo over the controversial Seralini GM maize study and questions about the safety of foods made from genetically modified crops has obscured another line of attack on biotechnology: claims that GM crops are environmentally unfriendly.
Seralini and his colleagues required that reporters who wanted pre-release access to the study sign a non-disclosure agreement that barred them from seeking input from outside sources including other scientists which, remarkably, many prominent news organizations agreed to.