Funding for this research was provided by:
Poul og Erna Sehested Hansens Fond
Aase og Ejnar Danielsens Fond
Dronning Louises Børnehospitals Forskningsfond
Received: 25 May 2020
Accepted: 10 September 2020
First Online: 23 September 2020
Ethics approval and consent to participate
: The study was approved by the Danish Capital Region Ethics Committee on Biomedical Research Ethics (journal number H-3-2014-052). The parents of all participants gave written consent.
: Not applicable.
: The authors declare no competing interests.