Karppanen, Anna-Kaisa
Miettunen, Jouko
Hurtig, Tuula
Nordström, Tanja
Tammelin, Tuija
Korpelainen, Raija
Funding for this research was provided by:
Signe ja Ane Gyllenbergin Säätiö (5071)
Juho Vainion Säätiö
Yrjö Jahnssonin Säätiö (20207302)
the Ministry of Education and Culture in Finland (OKM/86/626/2014, OKM43/626/2015, OKM17/262/2016, OKM47/626/2017, OKM/54/626/2019, OKM/85/626/2019, OKM/1096/626/2020)
University of Oulu including Oulu University Hospital
Article History
Received: 28 October 2022
Accepted: 21 February 2023
First Online: 3 March 2023
Declarations
:
: The follow-up study was approved by the Ethical Committee of the Northern Ostrobothnia Hospital District, Oulu, Finland (94/2011), and it was conducted in accordance with the Declaration of Helsinki. The subjects and their parents provided written informed consent for the study. Personal identity information was encrypted and replaced with identification codes to ensure full anonymity.
: Not applicable.
: The authors declare that they have no competing interests.