Funding for this research was provided by:
Forskningsrådet om Hälsa, Arbetsliv och Välfärd (2012-1736)
Landstinget i Värmland
Article History
First Online: 11 December 2019
Compliance with Ethical Standards
:
: The authors declare that they have no conflict of interest.
: The data collection procedure followed the research ethics principles in humanistic-social science research stipulated by the Swedish Research Council. The questionnaire and the principles guiding the data collections in 2005 and onwards were reviewed by the Ethics Committee at Karlstad University, Sweden.