Larsson, Britt
Gerdle, Björn
Bernfort, Lars
Levin, Lars-Åke
Dragioti, Elena
Article History
Received: 24 October 2016
Accepted: 21 August 2017
First Online: 2 September 2017
Ethics approval and consent to participate
: The study was approved by the Regional Ethics Research Committee in Östergötland, Sweden (D.nr. 2012/154–31).). Patient informed consent was assumed through the completion and the return of the postal surveys.
: The sponsor of the study had no role in study design, data collection, data analysis, data interpretation, writing of the report, or the decision to submit for publication. The authors had full access to all the data in the study and had final responsibility for the decision to submit for publication. The authors declare no conflicts of interest.
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