Text and Data Mining valid from 2019-01-24
Received: 23 October 2017
Accepted: 15 January 2019
First Online: 24 January 2019
Ethics approval and consent to participate
: Ethical clearance was obtained from the Ethics Review Committee of Faculty of Medicine and Allied Sciences, Rajarata University of Sri Lanka (ERC/2017/22). Administrative clearance was obtained from the regional director of health services of Anuradhapura district. Institutional permission was obtained from all relevant officers in charge of each of the institutions.
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