Funding for this research was provided by:
Ministry of Education and Science of the Russian Federation
Text and Data Mining valid from 2018-08-14
Received: 13 March 2018
Accepted: 5 August 2018
First Online: 14 August 2018
Ethics approval and consent to participate
: All KIHD study procedures, including the data linkages with national health registries, were approved by the Committee on Research Ethics of the University of Eastern Finland and the former University of Kuopio. Written informed consent was obtained from all participants.
: Not applicable.
: The authors declare that they have no competing interests.
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