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. 2020 Jun 26;9:649. [Version 1] doi: 10.12688/f1000research.24136.1

Figure 4. Analysis of the three most frequent publishers with more Open Access (OA) COVID-19 papers hosted in PubMed in Q1 of 2020: Elsevier, Wiley and Springer.

Figure 4.

( a) Percentage of OA publications of the most relevant publishers: Elsevier, Wiley and Springer. ( b) Distribution of their open content by Gold, Hybrid, Green or Bronze status. ( c) Distribution of the licensed and non-licensed articles of the three publishers. ( d) Distribution of the most frequent licensing type by each publisher: from the most restrictive licenses to the more open ones. (Data extracted from PubMed: 23 rd April 2020).