[rablackburn]

They mention this in the article, and of course, the scientific method means we _want_ to have more than one suggestive meta-analysis before we declare any kind of "discovery" at all.

> Proteins (for example Glial Fibrillary acidic protein, GFAP) had previously been identified as potential biomarkers for dementia in smaller studies, but this new research was much larger and conducted over several years.