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Additional Information

Competing Interests

There are no conflicts of interest to declare.

Author Contributions

Grace Gachanja conceived and designed the experiments, performed the experiments, analyzed the data, wrote the paper, reviewed drafts of the paper.

Human Ethics

The following information was supplied relating to ethical approvals (i.e., approving body and any reference numbers):

Walden University Institution Review Board (Approval # 11-10-10-03904)

Kenyatta National Hospital Research Standards and Ethics Committee (Approval # P373/10/2010).


There was no funding received for this study.

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