Oura, Petteri
Paananen, Markus
Niinimäki, Jaakko
Tammelin, Tuija
Herrala, Sauli
Auvinen, Juha
Korpelainen, Raija
Junno, Juho-Antti
Karppinen, Jaro
Article History
Received: 16 February 2016
Accepted: 18 May 2016
First Online: 10 June 2016
Competing interests
: The authors declare no competing financial interests.