Funding for this research was provided by:
Horizon 2020 Framework Programme (764860)
Seventh Framework Programme (602919)
Stockholms Läns Landsting (LS 2018-1157)
Leif Lundblad and family
Received: 26 February 2021
Accepted: 5 May 2021
First Online: 12 May 2021
: All participants provided written informed consent before participation. The study was approved by the Swedish Ethical Review Authority board (permit 2014/1604-31/1) and followed the principles of the Declaration of Helsinki.
: Not applicable, as this manuscript does not contain any individual person’s data.
: The authors declare that they have no competing interests.