PubMed and Europe PMC together form the searchable index of the biomedical literature; every claim here should trace back to something in them.
PubMed and Europe PMC together index the biomedical literature, more than 37 million citations with full text for open-access articles, and every claim on OnCo should trace back to something in them. PubMed is run by the NLM and Europe PMC by EMBL-EBI; both are public. Europe PMC adds text-mined annotations and preprints on top of the shared record. On OnCo the pair is cited by the bottlenecks Failures are hidden, Preclinical results do not reproduce, Knowledge reaches practice too slowly, Secrecy and intellectual property block collaboration and Misinformation and unproven therapies, and by ideas such as A replication status badge on every cancer paper, visible in PubMed and Funded living systematic reviews for every major cancer indication.