Received: 6 September 2021
Accepted: 11 January 2022
First Online: 1 February 2022
: Ethical approval was obtained from the Ethical Review Committee, MRI, Ministry of Health, Sri Lanka. All methods were performed in accordance with the relevant guidelines and regulations (e.g. Declaration of Helsinki). Informed consent was obtained from all subjects.
: Not applicable
: The authors declare that they have no competing interests.