Machacova, Katerina
Bäck, Jaana
Vanhatalo, Anni
Halmeenmäki, Elisa
Kolari, Pasi
Mammarella, Ivan
Pumpanen, Jukka
Acosta, Manuel
Urban, Otmar
Pihlatie, Mari
Article History
Received: 10 September 2015
Accepted: 7 March 2016
First Online: 21 March 2016
Competing interests
: The authors declare no competing financial interests.