Wijerathna, Tharaka
Gunathilaka, Nayana
Article History
Received: 21 October 2019
Accepted: 16 August 2020
First Online: 7 September 2020
Ethics approval and consent to participate
: Ethical approval was obtained for this study from the Ethics Review Committee of the Faculty of Medicine, University of Kelaniya (P/204/12/2016).
: Not applicable.
: The authors declare that they have no competing interests.