Funding for this research was provided by:
University of Bath
Received: 1 September 2020
Accepted: 6 April 2021
First Online: 13 April 2021
: Ethical clearance was obtained from the Ethics Review Committee of the Faculty of Medicine, University of Colombo, Sri Lanka (EC-17-116). Informed written consent was obtained from each participant prior to recruitment.
: Not applicable.
: The authors declare that they have no competing interests.