@petersuber FYI that what EuropePMC contains is described here: https://europepmc.org/Help#sources, it's not just PMC.
> Europe PMC contains all of the PubMed abstracts, the vast majority of PMC content, plus additional content including preprints, microPublications, patents, NHS clinical guidelines and Agricola records.
Further, in addition to the potential removal of already-indexed data, I think that we need to be wary of possible changes to the data pipeline at NLM.
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