Figure 4
From: Scoliosis: density-equalizing mapping and scientometric analysis
A: Average citations per item rate in each of the 20 countries with the highest citation rates. Study period from 1904 to 2007. 4B: Density-equalizing map showing the average citations per item in each country. Threshold excludes countries with <30 published items. The area of each country was scaled in proportion to its average citation rate. Study period from 1904 to 2007.