Funding for this research was provided by:
Bundesministerium für Gesundheit (ZMVI1-2515-FSB-782, GE 2015 03 23)
Text and Data Mining valid from 2018-12-01
Received: 17 May 2018
Accepted: 26 November 2018
First Online: 13 December 2018
Ethics approval and consent to participate
: The GNHIES98 and its mortality follow-up were approved by the Federal Commissioner for the Protection of Data and Freedom of Information (Germany). All participants provided written informed consent before enrolment.
: Not applicable.
: The authors declare that they have no competing interests.
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