Funding for this research was provided by:
FP7 Ideas: European Research Council
Article History
Received: 15 May 2018
Accepted: 5 September 2018
First Online: 17 September 2018
Ethics approval and consent to participate
: Ethical approval for the biomedical survey was given from the South East Multicentre Research Ethics Committees (ref 01/1/44) and for the 2008 (age 50) survey was from London Multicentre Research Ethics Committees; informed consent was obtained from survey participants.
: Not applicable.
: The authors declare that they have no competing interests.
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