Funding for this research was provided by:
TrygFonden (ID nr. 103286)
Received: 11 November 2020
Accepted: 19 April 2021
First Online: 27 April 2021
: The study was registered with the Danish Data Protection Agency (j.no. RHP-2017-009). The IMR and IPS studies are registered with the Danish Ethics Committee (j.no. H-1-2010 and S-2015-2000-163). According to Danish Law, no ethical approval from the Ethics Committee was required for the present study because no biomedical intervention took place. All participants gave informed, written consent. All direct reference to the individuals has been anonymised.
: The authors have no competing interests.