Received: 29 October 2019
Accepted: 14 November 2019
First Online: 5 December 2019
Ethics approval and consent to participate
: This study was approved by the Research Ethics Committee of the University of Port Harcourt Teaching Hospital in Nigeria on March 8, 2017; Reference Number of approval: UPTH/ADM/90/S.II/VOL.XI/378. All participants included in this study gave written informed consent to participate in this research. Participation was voluntary, and confidentiality was maintained throughout the study.
: All participants included in this research gave written informed consent to publish the data contained within this study.
: The authors declare that they have no competing interests.