Table 1.
The top 10 productive countries/regions and institutions.
| Rank | Countries/regions | Count | Centrality | Year | Rank | Institutions | City | Count | Centrality | Year |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | USA | 753 | 0.3 | 2012 | 1 | Monash Univ | Melbourne | 90 | 0.1 | 2012 |
| 2 | England | 446 | 0.11 | 2012 | 2 | Univ Washington | Seattle | 77 | 0.14 | 2012 |
| 3 | Australia | 225 | 0.09 | 2012 | 3 | Alfred Hosp | Melbourne | 52 | 0.04 | 2012 |
| 4 | Germany | 183 | 0.05 | 2012 | 4 | Univ Pittsburgh | Pittsburgh | 48 | 0.15 | 2012 |
| 5 | Peoples R China | 155 | 0.08 | 2012 | 5 | Univ Sydney | Sydney | 43 | 0.06 | 2012 |
| 6 | Canada | 150 | 0.09 | 2012 | 6 | Univ Toronto | Toronto | 42 | 0.06 | 2012 |
| 7 | Italy | 135 | 0.06 | 2012 | 7 | Univ Cambridge | Cambridge | 40 | 0.06 | 2016 |
| 8 | France | 135 | 0.06 | 2012 | 8 | Univ Maryland | Washington | 37 | 0.05 | 2012 |
| 9 | Japan | 75 | 0.04 | 2013 | 9 | Univ Witten Herdecke | Cologne | 32 | 0.06 | 2012 |
| 10 | Netherlands | 73 | 0.03 | 2012 | 10 | Uniformed Serv Univ Hlth Sci | Bethesda | 31 | 0.04 | 2013 |