Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Top 10 countries in which key contributors’ organizations were based in the review of academic literature (review time frame: January 1, 2020, to September 15, 2020; N=226).
| Country of key contributors’ organization | Included articles, n (%) |
| United States | 64 (28.3) |
| China (mainland) | 23 (10.2) |
| United Kingdom | 20 (8.8) |
| India | 13 (5.8) |
| Australia | 8 (3.5) |
| France | 8 (3.5) |
| Taiwan | 8 (3.5) |
| Singapore | 7 (3.1) |
| South Korea | 7 (3.1) |
| Spain | 6 (2.7) |
