Funding for this research was provided by:
Signe ja Ane Gyllenbergin Säätiö (5317)
Received: 2 August 2020
Accepted: 17 December 2020
First Online: 23 January 2021
Ethics approval and consent to participate
: This study was ethically approved by the Ethical Committee of the Finnish South-West Hospital District, in December 2016. All participating parents and all children who were 7 years or older at the time of the study signed an informed written consent for participation at the point of recruitment.
: The authors declare that they have no competing interests.