Funding for this research was provided by:
National Center for Global Health and Medicine (27S1)
Received: 21 February 2019
Accepted: 24 April 2019
First Online: 14 May 2019
Ethics approval and consent to participate
: We have obtained the ethical approval from The Research Ethics Committees of the Graduate School of Medicine at the University of Tokyo and Nepal Health Research Council. Written informed consent was obtained from all the key informants. Their participation was voluntarily and their confidentiality and anonymity was maintained.
: Not applicable.
: The authors declare that they have no competing interests.
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