Funding for this research was provided by:
Bhutan Ministry of Health
Received: 17 March 2020
Accepted: 4 August 2020
First Online: 24 August 2020
Ethics approval and consent to participate
: Ethics approval was provided by Human Research Protection Program Institutional Review Board at Yale University and the Bhutan Research Ethics Board of Health.
: Not Applicable.
: We declare no competing interests.