Funding for this research was provided by:
Svenska Forskningsrådet Formas (259–2012-37)
Forskningsrådet om Hälsa, Arbetsliv och Välfärd (2011-0445)
Cutting Edge Medical Research granted by the County Council of Västerbotten (VLL-355661)
Received: 8 November 2018
Accepted: 26 November 2019
First Online: 10 December 2019
Ethics approval and consent to participate
: The study was approved by the Regional Ethical Review Board in Umeå, Sweden (2012–69-31 M). At that time in Sweden written consent was not needed. Thus, the Board accepted oral consent and did not require written consent. Oral informed consent was received and the participants were informed about the strict confidentiality in relation to the interviews as well as about their rights to withdraw from the study at any time without motivation. Written consent was not requested from the board.
: Not Applicable.
: The authors declare that they have no competing interests.