| Authors | Contributions | ||||
| Conception and design of the study | acquisition of data | Analysis and interpretation of data | Drafting the article or revising it critically for important intellectual content | Final approval of the version to be submitted | |
| Enebe JTI | Yes | Yes | Yes | Yes | Yes |
| llo CA | Yes | Yes | Yes | Yes | |
| Ofor IJ | Yes | Yes | Yes | Yes | |
| Chukwu bui ke KE | Yes | Yes | Yes | Yes | |
| Udeozor N | Yes | Yes | Yes | Yes | |
| Omeke CA | Yes | Yes- | Yes | Yes | |
| Nwankwo MN | Yes | Yes | Yes | Yes | |
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