I didn't go through and look at all of them, but here are 4 of the source studies which certainly didn't require any FOIA. https://doi.org/10.1080/02772240701806501 https://doi.org/10.1080/15287394.2010.519317 https://academic.oup.com/cid/article/54/12/1778/455098 https://www.ebiomedicine.com/article/S2352-3964(17)30046-4/a...