Koskinen, Pekka http://orcid.org/0000-0001-7711-3562
Lämsä, Joni
Maunuksela, Jussi
Hämäläinen, Raija
Viiri, Jouni
Article History
Received: 7 December 2017
Accepted: 21 March 2018
First Online: 1 May 2018
Ethics approval and consent to participate
: Procedures followed were in accordance with the ethical standards of the University of Jyväskylä. Students’ written consent to participate in the study was obtained. Analysis and presentation of data preserved the anonymity of participants.
: The authors declare that they have no competing interests.
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