Nielsen, Steffen
Bassler, Niels http://orcid.org/0000-0002-4160-1078
Grzanka, Leszek
Swakon, Jan http://orcid.org/0000-0001-9262-7326
Olko, Pawel http://orcid.org/0000-0001-5554-8178
Andreassen, Christian Nicolaj
Alsner, Jan
Sørensen, Brita Singers
Article History
Received: 26 March 2018
Accepted: 8 August 2018
First Online: 23 August 2018
Competing Interests
: The authors declare no competing interests.