Rydén, M
Bäckdahl, J
Petrus, P
Thorell, A
Gao, H
Coue, M
Langin, D
Moro, C
Arner, P
Article History
Received: 17 July 2015
Revised: 10 September 2015
Accepted: 28 September 2015
First Online: 26 October 2015
Competing interests
: The authors declare no conflict of interest.