Funding for this research was provided by:
Skandia research
Forskningsrådet om Hälsa, Arbetsliv och Välfärd
Vetenskapsrådet
Stiftelsen Professor Bror Gadelius Minnesfond
Linköping University
Article History
Received: 7 February 2020
Accepted: 7 August 2020
First Online: 19 August 2020
Change Date: 16 September 2023
Change Type: Correction
Change Details: A Correction to this paper has been published:
Change Details: https://doi.org/10.1007/s00127-023-02560-7
Compliance with ethical standards
:
: The authors declare that they have no conflicts of interest.
: The study was approved by the Ethics committee at the University of Lund in 1994 and 1998, and by the Ethical review board in Linköping in 2007 and 2015.