Fridell, Sara
Ström, Edvin
Agebratt, Christian
Leanderson, Per
Guldbrand, Hans
Nystrom, Fredrik H https://orcid.org/0000-0002-1680-1000
Article History
Received: 2 August 2017
Revised: 26 September 2017
Accepted: 1 October 2017
First Online: 5 January 2018
Competing interests
: The authors declare no conflict of interest.