Table 5.
Country affiliation of main author
| Authorship countries | n | % |
|---|---|---|
| USA | 42 | 21.2 |
| Nigeria | 32 | 16.2 |
| UK | 18 | 9.1 |
| Egypt | 15 | 7.6 |
| International organizations | 13 | 6.6 |
| France | 8 | 4.1 |
| Sweden | 7 | 3.5 |
| Ethiopia | 4 | 2 |
| Kenya | 4 | 2 |
| Saudi Arabia | 4 | 2 |
| Sudan | 4 | 2 |
| Switzerland | 3 | 1.5 |
| Othersa | 36 | 18.2 |
| N/A | 8 | 4 |
| Total | 198 | 100 |
a
Others: Australia, Belgium, Burkina Faso, Cameroon, Canada, Cuba, Denmark, Gambia, Germany, Ghana, Israel, Italy, Kuwait, Mali, Mexico, the Netherlands, Norway, Oman, Poland, Senegal, South Africa, Spain, Pakistan.