| Country | Abstracts | Downloads | |
|---|
 | United States | 342 | 286 | 
 |
 | Australia | 51 | 37 |
|
 | United Kingdom | 11 | 34 |
|
 | unknown | 115 | 32 |
|
 | Europe | 12 | 19 |
|
 | Canada | 12 | 13 |
|
 | Spain | 42 | 11 |
|
 | India | 9 | 9 |
|
 | South Africa | 3 | 8 |
|
 | Iran, Islamic Republic of | 4 | 7 |
|
 | China | 3 | 6 |
|
 | Indonesia | 5 | 5 |
|
 | Mexico | 19 | 5 |
|
 | Portugal | 4 | 5 |
|
 | Ethiopia | 1 | 5 |
|
 | Singapore | 2 | 4 |
|
 | Malaysia | 1 | 4 |
|
 | New Zealand | 1 | 4 |
|
 | Finland | 2 | 3 |
|
 | Ireland | 0 | 3 |
|
 | Austria | 2 | 3 |
|
 | Turkey | 1 | 3 |
|
 | Taiwan, Province of China | 1 | 3 |
|
 | United Arab Emirates | 1 | 3 |
|
 | Russian Federation | 2 | 3 |
|
 | Nepal | 0 | 2 |
|
 | Korea, Republic of | 1 | 2 |
|
 | Kenya | 0 | 2 |
|
 | Brazil | 7 | 2 |
|
 | Peru | 5 | 2 |
|
 | Hong Kong | 4 | 2 |
|
 | Chile | 5 | 2 |
|
 | Jordan | 0 | 2 |
|
 | Romania | 1 | 2 |
|
 | Thailand | 1 | 2 |
|
 | Zimbabwe | 0 | 1 |
|
 | Fiji | 0 | 1 |
|
 | Norway | 0 | 1 |
|
 | Japan | 2 | 1 |
|
 | Belgium | 0 | 1 |
|
 | Costa Rica | 2 | 1 |
|
 | Pakistan | 0 | 1 |
|
 | Bahrain | 0 | 1 |
|
 | Italy | 7 | 1 |
|
 | Argentina | 8 | 1 |
|
 | Venezuela | 3 | 1 |
|
 | Slovenia | 0 | 1 |
|
 | Slovakia | 1 | 1 |
|
 | Barbados | 0 | 1 |
|
 | Israel | 1 | 1 |
|
 | Malta | 2 | 1 |
|
 | Puerto Rico | 1 | 1 |
|
 | Germany | 2 | 1 |
|
 | Netherlands | 3 | 1 |
|
 | Moldova, Republic of | 1 | 1 |
|
 | Colombia | 5 | 0 |
|
 | Sweden | 3 | 0 |
|
 | Dominican Republic | 2 | 0 |
|
 | Poland | 2 | 0 |
|
 | El Salvador | 2 | 0 |
|
 | France | 2 | 0 |
|
 | Sri Lanka | 1 | 0 |
|
 | Philippines | 1 | 0 |
|
 | Ecuador | 1 | 0 |
|
 | Switzerland | 1 | 0 |
|
 | Bangladesh | 1 | 0 |
|
 | Tanzania, United Republic of | 1 | 0 |
|
 | Bulgaria | 1 | 0 |
|
