Funding for this research was provided by:
Received: 29 October 2020
Accepted: 22 February 2021
First Online: 28 February 2021
Ethics approval and consent to participate
: This study was granted ethical approval by the Human Ethics Research Committee of the Faculty of Medical Sciences, University of Sri Jayewardenepura Gangodawila, Nugegoda, Sri Lanka (reference 31/18) on the 4<sup>th</sup> of October 2018. All participants provided written consent to participate in the study.
: All participants consented to the publication of de-identified data.
: The authors do not have any competing interest to declare.