[Freegile]

Hmm.. that seems like a journalistic article that one would have to pay $41.95 for to read it?

I would be more interested in a study. With clearly outlined methology.

[Analog24]

It's a medical journal, Trends in Immunology, the same type of journal that all medical studies are published in. Unfortunately we still have a broken publishing system in the US so it is insanely expensive to read articles/studies published in these journals unless you work somewhere with an institution-level account.