Here's a direct link to the results section of the study: https://www.pnas.org/content/early/2020/12/01/2014704117#sec-2 https://www.pnas.org/content/early/202

Here's a direct link to the results section of the study: https://www.pnas.org/content/early/2020/12/01/2014704117#sec-2 https://www.pnas.org/content/early/2020/12/01/2014704117#sec...