Almost none of the 20% people mentionned had a MRI scan. So you don't answer the question. The problem of long covid studies is they don't have a control group

Almost none of the 20% people mentionned had a MRI scan. So you don't answer the question. The problem of long covid studies is they don't have a control group, so it is easy to say wrong things. Its probably closer to 1-4% than 20%