Arvidsson, Per M.
Kovács, Sándor J.
Töger, Johannes
Borgquist, Rasmus
Heiberg, Einar
Carlsson, Marcus
Arheden, Håkan
Article History
Received: 30 September 2015
Accepted: 5 February 2016
First Online: 26 February 2016
Competing interests
: The authors declare no competing financial interests.