Received: 11 August 2021
Accepted: 29 November 2021
First Online: 18 December 2021
: Ethical approval was obtained from the Ethical Review Committee, Faculty of Medicine, University of Kelaniya, Sri Lanka. All methods were performed in accordance with the relevant guidelines and regulations (Declaration of Helsinki). Informed written consent was obtained from all participants.
: Not applicable.
: The authors declare that they have no competing interests.