This work was funded by the European Commission H2020 project OpenAIRE2020 (Grant agreement: 643410, Call: H2020-EINFRA-2014-1).
The funder provided support in the form of salaries for authors [TRH, AD, BS], but did not have any additional role in the study design, data collection and analysis, decision to publish, or preparation of the manuscript. The specific roles of these authors are articulated in the `author contributions' section. Please note that the author contributions as listed in the paper are incomplete, owing to a data entry error. The correct information regarding contributions is as follows:
- Tony Ross-Hellauer (ORCID 0000-0003-4470-7027): Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Project Administration, Resources, Supervision, Validation, Writing – original draft, Writing – review & editing
- Arvid Deppe (ORCID 0000-0001-7190-9535): Conceptualization, Data curation, Investigation, Methodology, Project administration, Resources, Writing – review & editing
- Birgit Schmidt (ORCID 0000-0001-8036-5859): Conceptualization, Data curation, Formal analysis, Funding acquisition, Supervision, Validation, Visualization, Writing – original draft, Writing – review & editing
Competing interests: This work was conducted as part of the OpenAIRE2020 project, an EC-funded initiative to implement and monitor Open Access and Open Science policies in Europe and beyond. The lead author recently joined Know-Center GmbH, Graz, Austria. The Know-Center is funded within the Austrian COMET program – Competence Centers for Excellent Technologies - under the auspices of the Austrian Federal Ministry of Transport, Innovation and Technology, the Austrian Federal Ministry of Economy, Family and Youth, and the State of Styria. COMET is managed by the Austrian Research Promotion Agency FFG. This new commercial affiliation does not alter the authors' adherence to PLOS ONE policies on sharing data and materials.European Commission H2020 - OpenAIRE2020 - Open Access Infrastructure for Research in Europe 2020 (Grant agreement: 643410