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Top 10 cited countries contributing to this research area.
| Country | Total production | Total citations | Average article citations |
|---|---|---|---|
| USA | 878 | 31,363 | 44.30 |
| China | 321 | 5036 | 17.86 |
| Australia | 96 | 3,593 | 47.28 |
| Italy | 142 | 3,171 | 29.09 |
| UK | 136 | 3,136 | 37.78 |
| Japan | 161 | 2,877 | 21.31 |
| France | 74 | 1,801 | 35.31 |
| Germany | 106 | 1,707 | 26.26 |
| Canada | 117 | 1,648 | 21.13 |
| Korea | 85 | 1,528 | 20.37 |
