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PMC:7781502 / 4984-5781 JSONTXT

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LitCovid-PubTator

Id Subject Object Predicate Lexical cue tao:has_database_id
86 135-143 Disease denotes COVID-19 MESH:C000657245
87 540-548 Disease denotes COVID-19 MESH:C000657245

LitCovid-sentences

Id Subject Object Predicate Lexical cue
T43 0-92 Sentence denotes In the first half of 2020, the total number of articles published on PubMed equaled 858,641.
T44 93-201 Sentence denotes Overall, we identified 27,815 articles on COVID-19, which constitutes 3.24% of all publication in this time.
T45 202-357 Sentence denotes Among those we found 18,225 (65.52%) original articles, 2,449 (8.8%) reviews, 69 (0.25%) systematic reviews with meta-analysis, and 171 (0.61%) guidelines.
T46 358-464 Sentence denotes The remaining 6,901 (24.81%) positions were letters to the editors, commentaries, errata, or unclassified.
T47 465-684 Sentence denotes In a per-month analysis we found that in January, two articles (0.007%) on COVID-19 were indexed, 37 (0.13%) in February, 620 (2.23%) in March, 2,514 (9.04%) in April, 5,527 (19.87%) in May, and 18,596 (66.85%) in June.
T48 685-797 Sentence denotes From those articles, we retrieved n = 519 preprint publications (n = 319 from medRxiv and n = 200 from bioRxiv).