Article History
Received: 15 March 2018
Accepted: 2 July 2018
First Online: 6 July 2018
Compliance with ethical standards
:
: On behalf of all authors, the corresponding author states that there is no conflict of interest.
: The University of Ibadan/University College Hospital Institutional Ethical Review Board (UI/UCH ERB) approved this research (reference number: UI/EC/12/0092).
: Informed consent was obtained from all individual participants included in this study.