Qvarnström, Martin http://orcid.org/0000-0001-7998-2243
Ahlberg, Per E. http://orcid.org/0000-0001-9054-2900
Niedźwiedzki, Grzegorz http://orcid.org/0000-0002-4775-5254
Article History
Received: 24 May 2018
Accepted: 14 November 2018
First Online: 30 January 2019
Competing Interests
: The authors declare no competing interests.