Schöll, Michael
Carter, Stephen F.
Westman, Eric
Rodriguez-Vieitez, Elena
Almkvist, Ove
Thordardottir, Steinunn
Wall, Anders
Graff, Caroline
Långström, Bengt
Nordberg, Agneta
Article History
Received: 1 July 2015
Accepted: 13 October 2015
First Online: 10 November 2015
Competing interests
: The authors declare no competing financial interests.