Åström, Pirjo
Juurikka, Krista
Hadler-Olsen, Elin S
Svineng, Gunbjørg
Cervigne, Nilva K
Coletta, Ricardo D
Risteli, Juha
Kauppila, Joonas H
Skarp, Sini
Kuttner, Samuel
Oteiza, Ana
Sutinen, Meeri
Salo, Tuula
Article History
Received: 27 January 2017
Revised: 5 July 2017
Accepted: 6 July 2017
First Online: 3 August 2017
Competing interests
: The authors declare no conflict of interest.