Funding for this research was provided by:
Received: 9 June 2020
Accepted: 8 September 2020
First Online: 14 September 2020
Ethics approval and consent to participate
: The research proposal was reviewed and approved by the Ethical review board of Mae Fah Luang University (REH-62309) and Ministry of Health, Bhutan (PPD/admin.CI/(9)/2018–2019/3426). All participants were asked to obtain the informed consent form in written. All respondents answer was kept confidential and forms had identification number without any individual’s information that could reflect back to the participants.
: Not applicable.
: The authors declare that they have no competing interests.