Geographical distribution analysis by the 83 articlesa, b
| Countries and regions | Frequency |
|---|---|
| Bangladesh | 5 |
| Benin | 1 |
| Brazil | 2 |
| Cameroon | 1 |
| Chile | 1 |
| China | 5 |
| Estonia | 1 |
| France | 2 |
| Guatemala | 1 |
| India | 7 |
| Italy | 1 |
| Jordan | 1 |
| Mexico | 1 |
| Mozambique | 1 |
| Nicaragua | 1 |
| Nigeria | 1 |
| Pakistan | 1 |
| Paraguay | 1 |
| Peru | 2 |
| Rwanda | 1 |
| Sierra Leone | 2 |
| South Africa | 1 |
| Spain | 1 |
| Sri Lanka | 4 |
| sub-Saharan Africa | 1 |
| Tanzania | 1 |
| United States | 4 |
| Venezuela | 1 |
| Vietnam | 1 |
| Multiple | 13 |
| Countries and regions | Frequency |
|---|---|
| Bangladesh | 5 |
| Benin | 1 |
| Brazil | 2 |
| Cameroon | 1 |
| Chile | 1 |
| China | 5 |
| Estonia | 1 |
| France | 2 |
| Guatemala | 1 |
| India | 7 |
| Italy | 1 |
| Jordan | 1 |
| Mexico | 1 |
| Mozambique | 1 |
| Nicaragua | 1 |
| Nigeria | 1 |
| Pakistan | 1 |
| Paraguay | 1 |
| Peru | 2 |
| Rwanda | 1 |
| Sierra Leone | 2 |
| South Africa | 1 |
| Spain | 1 |
| Sri Lanka | 4 |
| sub-Saharan Africa | 1 |
| Tanzania | 1 |
| United States | 4 |
| Venezuela | 1 |
| Vietnam | 1 |
| Multiple | 13 |
Note(s): a Conceptual papers are excluded
b Other countries include: Afghanistan, Cambodia, Dominican Republic, Finland, Indonesia, Iraq, Kenya, Middle East, Suriname, Republic of Trinidad and Tobago and Tajikistan
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