Helama, Samuli http://orcid.org/0000-0002-9777-3354
Arppe, Laura
Uusitalo, Joonas
Holopainen, Jari
Mäkelä, Hanna M.
Mäkinen, Harri http://orcid.org/0000-0002-1820-6264
Mielikäinen, Kari
Nöjd, Pekka
Sutinen, Raimo
Taavitsainen, Jussi-Pekka
Timonen, Mauri
Oinonen, Markku http://orcid.org/0000-0002-0881-7643
Article History
Received: 31 August 2017
Accepted: 27 December 2017
First Online: 22 January 2018
Competing Interests
: The authors declare that they have no competing interests.