You have to view it at an individual study/paper level (ie: go to the link and pdf via the article). They have to declare sources of funding in the papers, so y

You have to view it at an individual study/paper level (ie: go to the link and pdf via the article). They have to declare sources of funding in the papers, so you can trace funding origins and conflicts of interests from those declarations in each study. The article itself does a nice job of linking to every necessary study - sometimes they don't bother and then you do start to get worried about how much of the content is accurate.