| Fast Marching Methods Recent countries visiting this post |  |
 | 98 | United States |
 | 32 | |
 | 7 | China |
 | 3 | France |
 | 3 | United Kingdom |
 | 2 | Vietnam |
 | 2 | Canada |
 | 2 | Russian Federation |
 | 2 | South Africa |
 | 1 | Korea, Republic of |
 | 1 | Ukraine |
 | 1 | Greece |
 | 1 | Tunisia |
 | 1 | India |
 | 1 | Spain |
 | 1 | Japan |
 | 1 | Turkey |
 | 1 | Norway |
 | 1 | Germany |
 | 1 | Taiwan |
 | 1 | Sweden |