Funding for this research was provided by:
University of Sri Jayewardenepura (ASP/01/RE/MED/2017/39)
Received: 29 December 2019
Accepted: 23 June 2020
First Online: 21 July 2020
Ethics approval and consent to participate
: Ethical approval was obtained from the Ethics Review Committee (ERC ref. No: 25/ 27th May 2017) of the Faculty of Medical Sciences, University of Sri Jayewardenepura, Sri Lanka. All participants were informed that their participation was voluntary and their identities would be kept strictly confidential. Informed written consent was taken from all participants who voluntarily participated.
: Not applicable.
: The authors declare that they have no competing interests.