I couldn’t see a link in that article to the study. I would be interested to know if they graded how wrong Wikipedia was. The criteria for wrongness is describe

I couldn’t see a link in that article to the study. I would be interested to know if they graded how wrong Wikipedia was. The criteria for wrongness is described as “contained information that contradicted the latest medical research on the condition.”. But Wikipedia articles are huge, containing many pieces of information. What if an article contains just one outdated piece of information amongst hundreds of others, and the material points are substantially correct?