Gustavsson, Inger
Aarnio, Riina
Berggrund, Malin
Hedlund-Lindberg, Julia
Strand, Ann-Sofi
Sanner, Karin
Wikström, Ingrid
Enroth, Stefan
Olovsson, Matts
Gyllensten, Ulf
Article History
Received: 1 July 2017
Revised: 11 December 2017
Accepted: 13 December 2017
First Online: 13 February 2018
Change Date: 20 March 2018
Change Type: Update
Change Details: This paper was modified 12 months after initial publication to switch to Creative Commons licence terms, as noted at publication
Competing interests
: The funders of the study had no role in the design, data collection, data analysis, data interpretation or writing of the report. All authors had full access to the data in the study and the corresponding author (UG) had final responsibility for the decision to submit for publication. The authors declare no conflict of interest.