Funding for this research was provided by:
Medical Research Council (MR/K026992/1, MC_A540_53462, G1001245/96077, MR/K025023/1)
Age UK (Mr/M01311/1)
Biotechnology and Biological Sciences Research Council (MR/K026992/1)
Received: 14 September 2018
Accepted: 3 January 2019
First Online: 30 January 2019
Ethics approval and consent to participate
: Ethical approval was obtained from the Multi-Centre Research Ethics Committee for Scotland (LBC1936). Ethical approval was obtained from the NHS and/or Glasgow University Ethics Committees (Twenty-07 cohorts). All participants provided written informed consent.
: Not applicable.
: The authors’ declare that they have no competing interests.
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