Funding for this research was provided by:
University of Colombo, Sri Lanka
Article History
Received: 24 April 2018
Accepted: 28 March 2019
First Online: 6 April 2019
Ethics approval and consent to participate
: The experimental procedures were approved by the Ethics Review Committee of the Faculty of Medicine, University of Colombo, Sri Lanka (ERC No. EC-16-073). Almost all subjects signed and provided voluntary informed consent before participation. In the case of a minority of patients that were unable to provide written informed consent due to their disease condition (<i>n</i> = 3), the guardian/s were briefed on the entire procedure and their written informed consent was obtained.
: Not applicable.
: The author(s) declare that they have no competing interests.
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