Peterson, Gunnel
Nilsson, David
Trygg, Johan
Falla, Deborah
Dedering, Åsa
Wallman, Thorne
Peolsson, Anneli
Article History
Received: 3 March 2015
Accepted: 22 September 2015
First Online: 16 October 2015
Competing interests
: The authors declare no competing financial interests.