Funding for this research was provided by:
Norrbotten Region, Research and Innovation Unit, Sweden
Received: 7 December 2017
Accepted: 29 January 2018
First Online: 7 February 2018
Change Date: 3 October 2018
Change Type: Correction
Change Details: Following publication of the original article , the authors reported an error in Fig. 1 and Table 1, concerning the number of female participants. The correct number is 283, instead of 238 that was originally published.
Ethics approval and consent to participate
: The Regional Ethics Review Board at Umeå University, Sweden, had approved this study (DNR 2010-227-31M, DNR 2011-228-32M, DNR 2014-10-32M). All participants provided verbal informed consent.
: Not applicable.
: Ursula Werneke has received funding for educational activities on behalf of Norrbotten Region (Masterclass Psychiatry Programme, EAPM 2016 Luleå, Sweden): Astra Zeneca, Janssen, Eli Lilly, Novartis, Otsuka/Lundbeck, Servier, Sunivion and Shire.Louise Öhlund, Michael Ott, Sofia Oja, Malin Bergqvist, Robert Lundqvist, Mikael Sandlund and Ellinor Salander Renberg declare that there is no conflict of interest.
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