Funding for this research was provided by:
Suomen Lääketieteen Säätiö (-)
Suomen Kulttuurirahasto (-)
Received: 25 February 2019
Accepted: 24 September 2019
First Online: 16 December 2019
Ethics approval and consent to participate
: Ethical approval was obtained from the coordinating ethical committee of Helsinki University Central Hospital. The study was registered within the Hospital District of Helsinki and Uusimaa (ExternalRef removed) clinical trials, number 211864, and later on to ExternalRef removed, number NCT01015547. A written consent to participate was obtained from parents and patients.
: Not applicable.
: The authors declare that they have no competing interests.