Simons, Hugh http://orcid.org/0000-0002-3093-9241
Haugen, Astri Bjørnetun http://orcid.org/0000-0001-6981-9856
Jakobsen, Anders Clemen
Schmidt, Søren http://orcid.org/0000-0002-8694-2044
Stöhr, Frederik
Majkut, Marta
Detlefs, Carsten http://orcid.org/0000-0003-2573-2286
Daniels, John E.
Damjanovic, Dragan http://orcid.org/0000-0002-9596-7438
Poulsen, Henning Friis
Article History
Received: 19 September 2016
Accepted: 24 May 2018
First Online: 25 June 2018
Competing interests
: The authors declare no competing interests.