Table 6.
Top 10 countries of affiliation of the authors.
| Country | WoS U Scopus | WoS | Scopus | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Centers | Authors | Authorships | f | hi% | TC | h-Index | f | hi% | TC | h-Index | |
| United States | 44 | 94 | 111 | 26 | 15.2% | 537 | 8 | 32 | 13.7% | 542 | 10 |
| Spain | 29 | 85 | 98 | 23 | 13.5% | 82 | 6 | 26 | 11.1% | 108 | 7 |
| United Kingdom | 43 | 67 | 79 | 30 | 17.5% | 571 | 13 | 40 | 17.1% | 905 | 15 |
| Italy | 17 | 65 | 66 | 4 | 2.3% | 9 | 2 | 17 | 7.3% | 25 | 2 |
| Germany | 15 | 35 | 52 | 13 | 7.6% | 120 | 7 | 23 | 9.8% | 141 | 8 |
| Australia | 12 | 32 | 51 | 14 | 8.2% | 182 | 5 | 17 | 7.3% | 230 | 6 |
| Portugal | 12 | 28 | 36 | 11 | 6.4% | 36 | 4 | 10 | 4.3% | 56 | 4 |
| Belgium | 3 | 14 | 23 | 8 | 4.7% | 117 | 3 | 7 | 3.0% | 148 | 3 |
| Brazil | 9 | 19 | 23 | 4 | 2.3% | 21 | 2 | 5 | 2.1% | 31 | 3 |
| Mexico | 10 | 19 | 22 | 6 | 3.5% | 15 | 2 | 7 | 3.0% | 33 | 3 |
f = frequency (number of articles published); hi% = relative frequency; TC = the total number of citations received by the published articles; h-index = Hirsch’s index.