TABLE 1.
The top ten productive countries based on the corresponding author’s information.
| Countries | N | Single country publications (SCP) | Multiple country publications (MCP) | Total citations | Average citations | % | H-index |
|---|---|---|---|---|---|---|---|
| USA | 445 | 387 | 58 | 17,536 | 39.41 | 40.09 | 59 |
| Germany | 132 | 106 | 26 | 3386 | 25.65 | 11.89 | 32 |
| France | 75 | 64 | 11 | 3160 | 42.13 | 6.76 | 26 |
| Italy | 71 | 56 | 15 | 2234 | 31.46 | 6.40 | 22 |
| China | 67 | 63 | 4 | 1135 | 16.94 | 6.04 | 18 |
| Korea | 52 | 47 | 5 | 578 | 11.12 | 4.68 | 16 |
| Spain | 35 | 26 | 9 | 2938 | 83.94 | 3.15 | 16 |
| Netherlands | 31 | 23 | 8 | 869 | 28.03 | 2.79 | 17 |
| Belgium | 25 | 20 | 5 | 391 | 15.64 | 2.25 | 15 |
| Switzerland | 23 | 19 | 4 | 480 | 20.87 | 2.07 | 14 |