Funding for this research was provided by:
Universität Heidelberg (Olympia Morata)
Deutsche Forschungsgemeinschaft and Ruprecht-Karls-Universität Heidelberg within the funding programme Open Access Publishing (IN-1150438)
Received: 2 May 2017
Accepted: 9 January 2018
First Online: 20 February 2018
Ethics approval and consent to participate
: Ethical approval for blood donations of voluntary healthy donors was obtained by the local ethics committee of the Medical Faculty of Mannheim, Heidelberg University (2009-327N-MA).
: Not applicable
: The authors declare that they have no competing interests.
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