Funding for this research was provided by:
Invest Northern Ireland (RD0714186)
Department for Employment and Learning, Northern Ireland (US-IRL 013)
Science Foundation Ireland (09/US/I1758)
National Science Foundation (NSF 0961250)
Article History
Received: 29 October 2019
Accepted: 2 April 2020
First Online: 25 April 2020
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.