Funding for this research was provided by:
Kela
Ella ja Georg Ehrnroothin Säätiö
Article History
First Online: 20 February 2019
Compliance with ethical standards
:
: All procedures performed in this study were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. Informed consent was obtained from all individual participants included in the study.
: The authors declare that they have no conflict of interest.