Jayawardena, R.
Wijetunga, W. M. U. A.
Ranasinghe, P.
Wanninayake, L.
Wickramasinghe, V. P.
Article History
Received: 11 June 2019
Revised: 8 October 2019
Accepted: 11 October 2019
First Online: 31 October 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: Informed written consent was obtained from study participants prior to recruitment and the study was approved by the Ethical Review Committee, Faculty of Medicine, University of Colombo, Sri Lanka.