The source is Bloomberg. Three investigative reporters, Peter Waldman, Tiffany Stecker and Joel Rosenblatt, filed an explosive report on August 9, 2017 entitled "Monsanto Was Its Own Ghostwriter for Some Safety Reviews". The article, posted on the Bloomberg site, is well worth reading. It presents information from internal Monsanto emails released by plaintiff's lawyers suing the chemical giant. According to the Bloomberg article, these emails show that the scientific journal "Critical Reviews in Toxicology" published "a purported 'independent' review of Roundup’s health effects that appears to be anything but".
To do this Monsanto not only paid Intertek Group Plc to develop a review supplement, entitled “An Independent Review of the Carcinogenic Potential of Glyphosate, but also had Monsanto scientists, including its chief of regulatory science, William Heydens, get "heavily involved in organizing, reviewing, and editing drafts submitted by the outside experts". The Monsanto-massaged result was then published as an "independent" review by "Critical Reviews in Toxicology", Bloomberg said.
For more on Monsanto, see:
- Bloomberg: "Monsanto Was Its Own Ghostwriter for Some Safety Reviews"
- Business Insider/Reuters: "EU Commission extends review of Bayer-Monsanto deal until August 22"
- Bloomberg: "Does the World’s Top Weed Killer Cause Cancer? Trump’s EPA Will Decide"
- Reuters: "Scant oversight, corporate secrecy preceded U.S. weed killer crisis"
- Bloomberg: "EPA Official Accused of Helping Monsanto ‘Kill’ Cancer Study"
- Les Echos: "Le nouveau patron de Bayer défend l’acquisition de Monsanto"