Figure 4
From: Silicosis: geographic changes in research: an analysis employing density-equalizing mapping
Number of scientific institutions engaged with "silicosis" (A), number of citations received concerning "silicosis" (B) and citations rate (C) of each particular country. A: Density-equalizing map showing the number of scientific institutionsconcerned with the topic “silicosis” of each particular country. The area of each country was scaled in proportion to its number of institutions. B: Density-equalizing map illustrating the total number of citations each country received concerning “silicosis”. The area of each country was scaled in proportion to its number of received citations. C: Density-equalizing map illustrating the citation rate (average citation per publication) of each particular country. The area of each country was scaled in proportion to its citation rate. Threshold > 30 published items.