Trotta, Luca
Hautala, Timo
Hämäläinen, Sari
Syrjänen, Jaana
Viskari, Hanna
Almusa, Henrikki
Lepisto, Maija
Kaustio, Meri
Porkka, Kimmo
Palotie, Aarno
Seppänen, Mikko
Saarela, Janna
Article History
Received: 16 November 2015
Revised: 12 February 2016
Accepted: 15 March 2016
First Online: 4 May 2016
Competing interests
: The authors declare no conflict of interest.