Laanto, Elina https://orcid.org/0000-0003-4172-3128
Hoikkala, Ville
Ravantti, Janne
Sundberg, Lotta-Riina https://orcid.org/0000-0003-3510-4398
Article History
Received: 23 January 2017
Accepted: 2 June 2017
First Online: 24 July 2017
Competing interests
: The authors declare no competing financial interests.