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Abubakar, Usman https://orcid.org/0000-0002-7549-2877
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Article History
Received: 5 November 2019
Accepted: 21 January 2020
First Online: 30 January 2020
Ethics approval and consent to participate
: Ethics approval was obtained from the Human Research and Ethics Committee in the participating hospitals with a waiver for patient informed consent (reference number: ABUTHZ/HREC/G23/2019, HMB/GHM/136/VOL.III/541 and MOH/ADM/744/VOL.1/716). Data was de-identified before analysis.
: Not applicable
: The author declare that there is no competing interests.
