Funding for this research was provided by:
Swedish Child Neuropsychiatry Foundation
CSL Behring AB
University of Gothenburg
Received: 22 February 2022
Accepted: 28 July 2022
First Online: 6 August 2022
: The trial was approved by the Swedish Ethical Review Authority. Parents/caregivers and patients provided written informed consent or assent, as appropriate, to participate in the trial. All methods were performed in accordance with the ethical principles in the Declaration of Helsinki.
: Not applicable.
: MJ received research grants from Shire/Takeda and has been engaged as a speaker or consultant by Shire/Takeda, SFI Health, PCM Scientific, Evolan, and New Nordic. AF received research grants from Shire and is presently advisor to Lipum AB. All other authors declare no competing interests.