| Country | Abstracts | Downloads | |
|---|
 | unknown | 3350 | 3282 | 
 |
 | United States | 4088 | 2869 |
|
 | Mexico | 1054 | 925 |
|
 | Spain | 297 | 305 |
|
 | Venezuela | 232 | 162 |
|
 | Colombia | 171 | 143 |
|
 | Chile | 188 | 136 |
|
 | Argentina | 143 | 106 |
|
 | Korea, Republic of | 256 | 72 |
|
 | Peru | 78 | 70 |
|
 | Europe | 91 | 48 |
|
 | Switzerland | 11 | 34 |
|
 | Australia | 275 | 30 |
|
 | Canada | 33 | 27 |
|
 | Costa Rica | 23 | 24 |
|
 | United Kingdom | 10 | 22 |
|
 | Brazil | 45 | 19 |
|
 | Bolivia | 17 | 18 |
|
 | France | 10 | 17 |
|
 | Dominican Republic | 33 | 15 |
|
 | Puerto Rico | 29 | 15 |
|
 | Guatemala | 40 | 14 |
|
 | Netherlands | 11 | 12 |
|
 | Nicaragua | 10 | 12 |
|
 | Uganda | 21 | 12 |
|
 | Ecuador | 19 | 12 |
|
 | Romania | 2 | 10 |
|
 | China | 277 | 9 |
|
 | Sweden | 10 | 8 |
|
 | Uruguay | 7 | 8 |
|
 | Germany | 13 | 8 |
|
 | South Africa | 11 | 8 |
|
 | El Salvador | 8 | 7 |
|
 | Portugal | 8 | 7 |
|
 | Paraguay | 3 | 7 |
|
 | Cuba | 4 | 6 |
|
 | Italy | 21 | 6 |
|
 | Bermuda | 0 | 5 |
|
 | Taiwan, Province of China | 26 | 5 |
|
 | United Arab Emirates | 9 | 5 |
|
 | Panama | 13 | 4 |
|
 | Russian Federation | 7 | 4 |
|
 | Iran, Islamic Republic of | 7 | 2 |
|
 | Philippines | 7 | 2 |
|
 | Honduras | 1 | 2 |
|
 | Lithuania | 13 | 2 |
|
 | India | 15 | 1 |
|
 | Indonesia | 4 | 1 |
|
 | Andorra | 0 | 1 |
|
 | Saudi Arabia | 4 | 1 |
|
 | Macedonia, the Former Yugoslav Republic of | 0 | 1 |
|
 | Hong Kong | 23 | 1 |
|
 | Japan | 35 | 1 |
|
 | Monaco | 0 | 1 |
|
 | Poland | 19 | 1 |
|
 | Croatia | 1 | 1 |
|
 | Vietnam | 29 | 1 |
|
 | Ireland | 30 | 0 |
|
 | Thailand | 27 | 0 |
|
 | Singapore | 22 | 0 |
|
 | Austria | 14 | 0 |
|
 | Burkina Faso | 12 | 0 |
|
 | Jordan | 10 | 0 |
|
 | Turkey | 8 | 0 |
|
 | Algeria | 8 | 0 |
|
 | Belgium | 6 | 0 |
|
 | Hungary | 6 | 0 |
|
 | Greece | 6 | 0 |
|
 | Egypt | 5 | 0 |
|
 | Finland | 4 | 0 |
|
 | Israel | 4 | 0 |
|
 | Malaysia | 2 | 0 |
|
 | New Zealand | 2 | 0 |
|
 | Kenya | 2 | 0 |
|
 | Norway | 2 | 0 |
|
 | Kuwait | 2 | 0 |
|
 | Sudan | 2 | 0 |
|
 | Sri Lanka | 1 | 0 |
|
 | Lebanon | 1 | 0 |
|
 | Slovenia | 1 | 0 |
|
 | Trinidad and Tobago | 1 | 0 |
|
 | Malawi | 1 | 0 |
|
 | Moldova, Republic of | 1 | 0 |
|
 | Cayman Islands | 1 | 0 |
|
 | Bahamas | 1 | 0 |
|
 | Bangladesh | 1 | 0 |
|
