Funding for this research was provided by:
University of Sri Jayewardenepura (ASP/01/RE/MED/2017/38)
Accepted: 16 September 2021
First Online: 25 September 2021
: Ethical approval for the study was obtained from the Ethics Review Committee of the Faculty of Medical Sciences, University of Sri Jayewardenepura, Sri Lanka (Reg. No. 23/18). The study was done in accordance with the national ethical standards. Informed written consent was taken from all participants prior to recruitment and before all procedures in this study.
: The authors declare no competing interests.