Persson, Helena http://orcid.org/0000-0002-5187-6446
Søkilde, Rolf http://orcid.org/0000-0003-3010-3599
Häkkinen, Jari http://orcid.org/0000-0002-8466-9179
Pirona, Anna Chiara
Vallon-Christersson, Johan http://orcid.org/0000-0002-2195-0385
Kvist, Anders http://orcid.org/0000-0002-1358-0695
Mertens, Fredrik http://orcid.org/0000-0002-6278-5232
Borg, Åke
Mitelman, Felix
Höglund, Mattias
Rovira, Carlos
Article History
Received: 22 February 2017
Accepted: 24 August 2017
First Online: 5 October 2017
Competing interests
: The authors declare no competing financial interests.