Funding for this research was provided by:
European Union Sixth Framework program
Alzheimer's Research UK
Received: 27 April 2020
Accepted: 18 August 2020
First Online: 21 September 2020
Ethics approval and consent to participate
: Informed consent was obtained for all subjects according to the Declaration of Helsinki (1991), and protocols and procedures were approved by the relevant local ethical committees at each site (AddNeuroMed, ART and DCR).
: Not applicable.
: The authors declare that they have no competing interests.