Lehtoranta, Lara
Koskinen, Anna
Vuolteenaho, Olli
Laine, Jukka
Kytö, Ville
Soukka, Hanna
Ekholm, Eeva
Räsänen, Juha
Article History
Received: 15 September 2016
Accepted: 8 February 2017
First Online: 31 May 2017
Competing interests
: The authors declare no conflict of interest.
Free to read: This content has been made available to all.