Funding for this research was provided by:
Novo Nordisk Fonden (N/a)
Kræftens Bekæmpelse (N/A)
Arvid Nilssons Fond (N/A)
Aase og Ejnar Danielsens Fond (N/A)
Familien Hede Nielsens Fond (N/A)
ML Jørgensen og Gunnar Hansens Fond (2956)
Toyota Foundation (KJ/BG 8871 H)
Received: 14 April 2020
Accepted: 14 May 2020
First Online: 6 July 2020
Ethics approval and consent to participate
: All participants and their parents received oral and written information and the parents gave written informed consent. The Regional Ethics Committee for the Capital Region (file. H 3-2012-105) and the Danish Data Protection Agency (file. 2007-58-0015/nr.30-0734) approved the study and the data protection structure.
: Not applicable.
: The authors declare no conflict of interest.