Funding for this research was provided by:
Bundesministerium für Bildung und Forschung (01GP1006A-C)
European Union, FP 7 (HEALTH-F4-2010-261469)
Text and Data Mining valid from 2018-06-13
Received: 31 March 2018
Accepted: 23 May 2018
First Online: 13 June 2018
Ethics approval and consent to participate
: Not applicable.
: The author declares that he has no competing interests.
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