Funding for this research was provided by:
European Union’s Seventh Framework Programme (Grant agreement 603111)
Text and Data Mining valid from 2019-08-14
Received: 1 May 2019
Accepted: 6 August 2019
First Online: 14 August 2019
Ethics approval and consent to participate
: As stated in the PACE protocol “All countries obtained ethical approval from the relevant ethics committee in the country or university, except in the Netherlands and Italy where this is not needed because retrospective data of deceased residents are used (ethical committees were informed in these countries to judge whether or not formal ethical approval is needed and a waiver can be provided”. In England, the study was approved by Haydock National Research Ethics Committee (reference 15/NW/0205). Consent for participation was not required for this publication.
: Not applicable.
: The authors declare that they have no competing interests.