Fig 1.
Flow chart, Web of Science Core Collection search results filtered stepwise (by years, author and document type).
Fig 2.
Flow chart, stepwise data processing using MS Excel, AppleScript and OpenRefine, by number of spreadsheet rows (one row per authors' affiliated institutions per publication).
Fig 3.
Articles of all authors from 1976–2015 (n = 4,587).
Fig 4.
Annual EVD cases (n = 31,024), and number of publications on EVD from 1976 to 2015 [note the different ordinates on y-axes].
Fig 5.
Global EVD research network, countries linked by cumulative co-authorships from 1976–2015, Layout: Geolayout.
Fig 6.
Global EVD research network, countries linked by cumulative co-authorship from 1976–2015, Layout: Force Atlas 2.
Fig 7.
Cumulative EVD research network on institution level.
Nodes sized by degree centrality. Research communities are colour-coded. Layout: Force Atlas 2.
Fig 8.
Publications from 1976–1985 by degree centrality (colour and size of nodes), Layout: Force Atlas 2.
Fig 9.
Publications from 1986–1995 by degree centrality (colour and size of nodes), Layout: Force Atlas 2.
Fig 10.
Publications from 1996–2005 by degree centrality (colour and size of nodes), Layout Force: Atlas 2.
Fig 11.
Publications from 2006–2015 by degree centrality (colour and size of nodes), Layout Force: Atlas 2.
Table 1.
SNA parameters and metrics of the global EVD research network, for overall network and stratified by 10-year periods.
Fig 12.
Degree centrality distribution, network from 2006–2015 [median (blue line), mean (red line)].
Table 2.
Top 10 ranking of institutions by degree and betweenness centrality.