Määttä, Suvi http://orcid.org/0000-0001-9771-5720
Konttinen, Hanna
de Oliveira Figueiredo, Rejane Augusta
Haukkala, Ari
Sajaniemi, Nina
Erkkola, Maijaliisa
Roos, Eva
Funding for this research was provided by:
Juho Vainion Säätiö (non appicaple)
Article History
Received: 14 September 2019
Accepted: 29 January 2020
First Online: 7 February 2020
Ethics approval and consent to participate
: Ethical approval was provided by the University of Helsinki Ethical Review Board in the Humanities and Social and Behavioral Sciences. A short letter with information about the study and the possibility to deny further participation was sent out to all invited parents. A parent or legal guardian of each participant provided an informed consent.
: Not applicable.
: The authors declare that they have no competing interest.