Received: 11 June 2018
Accepted: 9 October 2018
First Online: 22 October 2018
Ethics approval and consent to participate
: The research participants, after explaining the study to them, were enrolled in the study after they agreed and signed the consent forms. The ethical approval was received from Institutional Review Board, Institute of Medicine, Maharajgunj, Kathmandu [Ref #295(6–11-E)].
: The authors declare that they have no competing interests.
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