Linna, A.
Uitti, J. http://orcid.org/0000-0003-0371-1193
Oksa, P.
Toivio, P.
Virtanen, V.
Lindholm, H.
Halkosaari, M.
Sauni, R.
Funding for this research was provided by:
The Finnish Work Environment Fond (106078)
Article History
Received: 27 June 2019
Accepted: 3 November 2019
First Online: 19 November 2019
Compliance with ethical standards
:
: The authors declare that there is no conflict of interest.
: The study plan was approved by the Coordinating Ethics Committee of the Helsinki University Hospital District. Participation was voluntary, and all participants gave their written informed consent. All procedures performed in the study were in accordance with the ethical standards of the Helsinki Declaration or comparable ethical standards.