Received: 15 June 2018
Accepted: 9 August 2018
First Online: 17 August 2018
Ethics approval and consent to participate
: Ethical clearance was obtained from Ethics Committee of the University of Nigeria Teaching Hospital Enugu. verbal consent to participate were obtained from the respondents before they were enrolled in the study.
: Not Applicable.
: The authors declare that they have no competing interests.
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