Received: 7 November 2019
Accepted: 26 October 2020
First Online: 4 November 2020
Ethics approval and consent to participate
: Ethical approval with ref. number COOUTH/CMAC/RP/Vol.1/0029 was obtained from ethical committee of Chief Odumegwu Ojukwu University Teaching Hospital. A written informed consent form was obtained.
: Not applicable
: The authors have no conflict of interest to declare.