Christensen, Steen R.
Hansen, Brian B.
Pedersen, Kim H.
Thøgersen, Joakim R.
Jensen, Anker D. http://orcid.org/0000-0002-7341-4859
Funding for this research was provided by:
Innovationsfonden (155-2014-10)
Article History
Received: 10 April 2019
Revised: 11 June 2019
Accepted: 27 June 2019
First Online: 4 July 2019
Compliance with Ethical Standards
: The authors declare that they have no competing interests.