Henriksson, H https://orcid.org/0000-0003-2482-7048
Eriksson, B
Forsum, E
Flinke, E
Henriksson, P
Löf, M
Article History
Received: 21 February 2017
Revised: 21 June 2017
Accepted: 17 July 2017
First Online: 23 August 2017
Competing interests
: The authors declare no conflict of interest.