Received: 11 December 2018
Accepted: 28 January 2020
First Online: 3 February 2020
Ethics approval and consent to participate
: The ethical approval was obtained from International Review committee of Kathmandu University School of Medical Sciences/ Dhulikhel Hospital (IRC-KUSMS). The protocol approval number is 29/17. The participants were informed about their voluntary involvement including rights to withdraw during the study and the personal information will be kept confidential. All participants provided the informed written consent prior to the study.
: Not applicable.
: The authors declare that they have no competing interests.