Funding for this research was provided by:
The funding sources for the ECRHS study are listed in detail in the manuscript.
Text and Data Mining valid from 2019-02-14
Received: 26 October 2018
Accepted: 4 February 2019
First Online: 14 February 2019
Ethics approval and consent to participate
: Local ethics committees at each centre approved the study protocols, and all the participants gave their written informed consent.
: Not applicable.
: The authors declare that they have no competing interests.
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