| Country | Abstracts | Downloads | |
|---|
 | United States | 1835 | 355 | 
 |
 | Australia | 218 | 42 |
|
 | United Kingdom | 106 | 41 |
|
 | unknown | 182 | 29 |
|
 | Canada | 83 | 28 |
|
 | India | 46 | 25 |
|
 | Europe | 80 | 25 |
|
 | China | 68 | 24 |
|
 | Iran, Islamic Republic of | 32 | 21 |
|
 | France | 70 | 20 |
|
 | Italy | 35 | 18 |
|
 | Japan | 53 | 16 |
|
 | Germany | 47 | 15 |
|
 | Spain | 41 | 14 |
|
 | Israel | 15 | 12 |
|
 | Brazil | 20 | 12 |
|
 | Korea, Republic of | 10 | 11 |
|
 | Denmark | 15 | 10 |
|
 | Netherlands | 38 | 9 |
|
 | Belgium | 18 | 8 |
|
 | Slovenia | 16 | 7 |
|
 | Norway | 14 | 6 |
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 | Switzerland | 12 | 6 |
|
 | Singapore | 13 | 6 |
|
 | South Africa | 20 | 6 |
|
 | Taiwan, Province of China | 11 | 5 |
|
 | Russian Federation | 10 | 4 |
|
 | Turkey | 12 | 4 |
|
 | Mexico | 7 | 4 |
|
 | Hong Kong | 14 | 3 |
|
 | Sweden | 14 | 3 |
|
 | Indonesia | 6 | 3 |
|
 | New Zealand | 9 | 3 |
|
 | Malaysia | 8 | 3 |
|
 | Hungary | 8 | 3 |
|
 | Greece | 30 | 3 |
|
 | Yugoslavia | 3 | 2 |
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 | Finland | 9 | 2 |
|
 | Latvia | 4 | 2 |
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 | Argentina | 7 | 2 |
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 | Austria | 4 | 2 |
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 | Romania | 5 | 2 |
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 | Czech Republic | 8 | 2 |
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 | Poland | 13 | 2 |
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 | Thailand | 6 | 2 |
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 | Chile | 3 | 1 |
|
 | Peru | 2 | 1 |
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 | Slovakia | 4 | 1 |
|
 | Bulgaria | 9 | 1 |
|
 | Mali | 0 | 1 |
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 | Croatia | 2 | 1 |
|
 | Tunisia | 0 | 1 |
|
 | Ireland | 20 | 1 |
|
 | Portugal | 4 | 1 |
|
 | Saudi Arabia | 3 | 1 |
|
 | Philippines | 2 | 1 |
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 | Colombia | 4 | 0 |
|
 | Egypt | 4 | 0 |
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 | Mauritius | 3 | 0 |
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 | United Arab Emirates | 2 | 0 |
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 | Pakistan | 2 | 0 |
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 | Lithuania | 2 | 0 |
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 | Macedonia, the Former Yugoslav Republic of | 2 | 0 |
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 | Luxembourg | 1 | 0 |
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 | Iceland | 1 | 0 |
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 | Nigeria | 1 | 0 |
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 | Morocco | 1 | 0 |
|
 | Kenya | 1 | 0 |
|
 | Kuwait | 1 | 0 |
|
 | Ethiopia | 1 | 0 |
|
 | Venezuela | 1 | 0 |
|
