Männikkö, Niko http://orcid.org/0000-0003-1292-4852
Ruotsalainen, Heidi
Tolvanen, Asko
Kääriäinen, Maria
Funding for this research was provided by:
University of Oulu including Oulu University Hospital
Article History
First Online: 17 May 2019
Compliance with Ethical Standards
:
: The authors declare no conflict of interest.
: All procedures performed in this study involving human participants were conducted in accordance with the ethical standards of the institutional and state research committee and with the 1964 Helsinki declaration and its later amendments.
: Informed consent was obtained from all individual participants included in the study. Students agreed to participate in the study through the information page.