Open Access of COVID-19 related publications in the first quarter of 2020: a preliminary study based in PubMed
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Underlying data of the article: "Open Access of COVID-19 related publications in the first quarter of 2020: a preliminary study based in PubMed". Version 1 and Version 2 (after Unpaywall update). Data was analysed using Unpaywall and OpenRefine.
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Zenodo创建时间：
2020-07-27
