Järvinen, Tommi http://orcid.org/0000-0001-8515-9659
Ilonen, Ilkka
Kauppi, Juha
Salo, Jarmo
Räsänen, Jari
Article History
Received: 22 November 2017
Accepted: 30 January 2018
First Online: 12 February 2018
Ethics approval and consent to participate
: This study was approved by local medical ethical committees and was done according to the revised version of the Declaration of Helsinki (October 2008, Seoul).
: Not applicable.
: The authors declare that they have no competing interests.
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