Received: 19 April 2021
Accepted: 18 July 2021
First Online: 28 July 2021
: Informed written consent was taken from the participants. The study was approved by institutional review board (IRB) of Dow University of Health Sciences, Karachi, Pakistan (IRB letter no. 2018/1045).
: Not applicable.
: There is no conflict of interest either personal or financial among the authors.