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Tracking Openness and Topic Evolution of COVID-19 Publications January 2020-March 2021: Comprehensive Bibliometric and Topic Modeling Analysis

Tracking Openness and Topic Evolution of COVID-19 Publications January 2020-March 2021: Comprehensive Bibliometric and Topic Modeling Analysis

Pub Med-hosted SARS Co V-2–related papers published from January 1, 2020, to March 1, 2021 and their open access (OA) status based on Unpaywall. (a) Percentage of considered and excluded papers (without DOI and not scanned by Unpaywall) and their OA ratios. (b) Pub Med established publication type and their OA type. (c) Percentage of publications and citations divided by their OA publishing model. (d) Evolution of publications according to their OA publishing model. P90: 90th percentile.

Maider San Torcuato, Núria Bautista-Puig, Olatz Arrizabalaga, Eva Méndez

J Med Internet Res 2022;24(10):e40011