Received: 21 July 2020
Accepted: 20 October 2020
First Online: 30 October 2020
Ethics approval and consent to participate
: Ethical clearance was taken by the Ethics Committee before the commencement of the study [IEC/SJH/VMMC/Project/2017/983]. A written informed consent was obtained from each study participant or guardian of the wards and confidentiality of the participant’s test results was ensured throughout the research.
: All authors agree for publication of the present paper.
: The authors declare that they have no competing interests.