Actual link (full text article available for free)-- https://www.nature.com/articles/s41366-022-01211-2 .
oa.mg appears to be some sort of search aggregator that wants you to buy the article for $17 even though it's open access (freely available).
oa.mg appears to be some sort of search aggregator that wants you to buy the article for $17 even though it's open access (freely available).
Repackaging and selling free stuff is a business model that is hundreds of years old.
Occasionally, it's worth it, as the repackaging may come with some help understanding the material, or help in organizing it.
And I can sell you any GPL program I got for free, if you're willing to buy it...