Funding for this research was provided by:
National Institute for Health Research (17/63/130)
Received: 26 June 2020
Accepted: 5 August 2020
First Online: 11 August 2020
Ethics approval and consent to participate
: Ethics approval was provided by the University of York Health Sciences Research Governance Committee, Bangladesh Medical Research Council and Research and Ethics Forum (IREF), Rawalpindi Medical University. All participants gave written informed consent to take part.
: Not applicable.
: The authors declare that they have no competing interests.