https://journals.plos.org/plosone/article?id=10.1371%2Fjournal.pone.0239398

Authors. Abbey, E. J. et al

Venue. PLOS ONE

How the Institute flags it

established 3 times frontier 1 time

This source carries more than one flag across the corpus. That is not an inconsistency to resolve: the same work can be established evidence for one claim and frontier evidence for another, and the flag belongs to the use rather than to the source.

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