Text and Data Mining valid from 2018-04-01
Received: 6 November 2017
Accepted: 25 February 2018
First Online: 1 April 2018
Ethics approval and consent to participate
: Ethics approval was obtained from Ethics Review Committee, Faculty of Medicine, University of Colombo. Reference Number: EC-11-077.
: All five authors MGBS, SS, PDS, SIW, and SE declare that they have no competing interests.
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