Received: 19 September 2020
Accepted: 26 February 2021
First Online: 9 March 2021
: The Ethics Review Committee of the Faculty of Medical Sciences, University of Sri Jayewardenepura, Sri Lanka granted approval for this study [Ref. No.03/19]. All participants provided informed consent prior to participation in the study.
: Not applicable.
: The authors declare that they have no competing interests.