Funding for this research was provided by:
Forskningsrådet om Hälsa, Arbetsliv och Välfärd (.)
Received: 3 August 2018
Accepted: 6 June 2019
First Online: 25 June 2019
Ethics approval and consent to participate
: According to Swedish law, no ethical approval was needed as the study did not gather any biological material or sensitive information, nor did it involve any physical or psychological interventions [CitationRef removed]. Returning a completed questionnaire was regarded as giving informed consent to study participation.
: Not applicable.
: The authors declare that they have no competing interests.