Funding for this research was provided by:
Sigrid Juséliuksen Säätiö
Medicinska Understödsföreningen Liv och Hälsa
Wilhelm och Else Stockmanns Stiftelse
Stiftelsen Dorothea Olivia, Karl Walter och Jarl Walter Perkléns Minne
Received: 16 July 2021
Accepted: 13 October 2021
First Online: 14 January 2022
: The study was conducted in accordance with the Declaration of Helsinki. We obtained written informed consent from the children’s guardians. The research protocol was approved by the Helsinki University Hospital Ethics Committee for gynecology and obstetrics, pediatrics, and psychiatry (138/13/03/03/2011 and HUS/2274/2016).
: Not applicable.
: The authors declare that they have no competing interests.