| Sr. No. | Country | Authors |
|---|---|---|
| 1 | Nigeria | 111 |
| 2 | Malaysia | 95 |
| 3 | Indonesia | 44 |
| 4 | Philippines | 13 |
| 5 | Saudi Arabia | 12 |
| 6 | China | 10 |
| 7 | Zimbabwe | 10 |
| 8 | Ghana | 9 |
| 9 | Pakistan | 7 |
| 10 | Nigeria | 7 |
| 11 | India | 6 |
| 12 | Greece | 6 |
| 13 | Thailand | 6 |
| 14 | Iran | 6 |
| 15 | Korea | 5 |
| 16 | Vietnam | 5 |
| 17 | Japan | 5 |
| 18 | Thailand | 5 |
| 19 | Indonesia | 4 |
| 20 | Tanzania | 4 |
| 21 | Fiji | 3 |
| 22 | Kuwait | 3 |
| 23 | Kenya | 3 |
| 24 | Malaysia | 3 |
| 25 | Algeria | 2 |
| 26 | Rwanda | 2 |
| 27 | South Africa | 2 |
| 28 | Canada | 2 |
| 29 | Sri Lanka | 2 |
| 30 | Turkey | 2 |
| 31 | Jordan | 2 |
| 32 | Poland | 1 |
| 33 | Tunisia | 1 |
| 34 | 1 | |
| 35 | Bangladesh | 1 |
| 36 | Taiwan | 1 |
| 37 | Morocco | 1 |
| 38 | Jordan | 1 |
| 39 | Egypt | 1 |
