Article History
Received: 2 April 2020
Accepted: 16 September 2020
First Online: 29 September 2020
Ethics approval and consent to participate
: Ethical approval was obtained from the Ethical Review Committee of National of Sri Lanka (EC.19.076) for version 2.0 on 21 November 2019 to conduct the study. Informed written consent will be obtained from all patients by the investigators before participating in this study.
: Not applicable.
: The authors declare that they have no competing interests.