Funding for this research was provided by:
Lundbeckfonden (Grant no R16-A1694)
Sundhedsstyrelsen (Grant no 903516)
Strategiske Forskningsråd (Grant no 0603-00280B)
Danmarks Frie Forskningsfond (8045-00081B)
Received: 22 December 2021
Accepted: 17 June 2022
First Online: 13 July 2022
: The study was conducted in accordance with the guiding principles of the Declaration of Helsinki and was approved by the Local Ethics Committee (H-B-2008-093) and the Danish Data Protection Agency (2015-41-3696). Both parents gave written informed consent before enrolment.
: Both parents gave written informed consent before enrolment.
: EDC, MHH, JS, BC, KB, UT, and MAR all have younger siblings. JS, TR, KB, UT, SJS, and JR have older siblings. The authors declare no competing interests.