Received: 22 July 2020
Accepted: 10 May 2021
First Online: 26 May 2021
: An information sheet of the study was attached to the self-administered questionnaire that was either emailed or posted to each of the participants. Completing and returning of the questionnaire was taken as implied consent to participate in the study. Ethics approval of the study including obtaining implied consent to participate was granted by the Ethics Review Committees of the Faculty of Medicine of the University of Colombo.
: Not applicable.
: The authors declare that they have no competing interests.