Funding for this research was provided by:
National Science Foundation of Sri Lanka (BCS-1839269)
Received: 19 January 2021
Accepted: 27 May 2021
First Online: 18 July 2021
: Ethical approval was obtained through icddr,b, the Pennsylvania State University, and the University of Missouri. Written consent was obtained before data were collected from each participant.
: Not applicable.
: The authors declare that they have no competing interests.