The scientific journal Critical Reviews in Toxicology has issued a rare “Expression of Concern” and requested corrections to articles it published that failed to fully disclose Monsanto’s role in reviews of glyphosate’s cancer risks.

The journal said all five articles it published in a 2016 supplemental issue titled “An Independent Review of the Carcinogenic Potential of Glyphosate” failed to include an accurate disclosure of the pesticide-maker’s involvement.

The five articles at issue were all highly critical of the 2015 finding by the World Health Organization’s International Agency for Research on Cancer that glyphosate, the main ingredient in Roundup, is a probable human carcinogen.

“It’s deplorable that Monsanto was the puppet master behind the supposedly ‘independent’ reviews of glyphosate’s safety,” said Nathan Donley, a senior scientist at the Center for Biological Diversity. “These papers were manufactured as a way to counteract the World Health Organization’s findings on glyphosate’s cancer risks. They could mislead the public in dangerous ways and should be completely retracted.”