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Top five diversely collaborative countries in the examined Scopus journals in 2016–2020 and the number of countries collaborating with them. For each year the numbers are aggregated over the first six months (repeating countries were removed). 2020-cov and 2020-non-cov show the top five collaborative countries for COVID-19 and non-COVID-19 related publications, respectively. (Numbers in parentheses display the number of collaborating countries)
