Fredin, Ola
Viola, Giulio http://orcid.org/0000-0002-8383-3328
Zwingmann, Horst
Sørlie, Ronald
Brönner, Marco
Lie, Jan-Erik
Grandal, Else Margrethe
Müller, Axel
Margreth, Annina
Vogt, Christoph
Knies, Jochen
Article History
Received: 4 July 2016
Accepted: 8 February 2017
First Online: 28 April 2017
Competing interests
: The authors declare no competing financial interests.