There is a link to the answer right on the page under "Editorial Expression of Concern". This answers how it bypassed an ethics council: https://www.pnas.org/co

There is a link to the answer right on the page under "Editorial Expression of Concern". This answers how it bypassed an ethics council: https://www.pnas.org/content/111/29/10779.1 https://www.pnas.org/content/111/29/10779.1