Pelto-Piri, Veikko
Warg, Lars-Erik
Kjellin, Lars
Funding for this research was provided by:
Forskningsrådet om Hälsa, Arbetsliv och Välfärd (2013-0389)
Article History
Received: 30 March 2019
Accepted: 19 April 2020
First Online: 26 April 2020
Ethics approval and consent to participate
: The study adhered to the principles outlined in the Declaration of Helsinki (World Medical Association Declaration of Helsinki, 2005) and was approved by the Regional Ethical Review Board in Uppsala, Sweden (Dnr: 2014/112). Written information was provided concerning the aim of the study, the confidentiality of the data handling and the voluntary nature of participation. Informed consent was provided by returning the questionnaire confidentially.
: Not applicable.
: The authors declare that they have no competing interests.