Funding for this research was provided by:
Deutsche Forschungsgemeinschaft (BA 5858/2-1)
Received: 1 May 2018
Accepted: 28 June 2018
First Online: 9 July 2018
Ethics approval and consent to participate
: The ethic committee if the University Medicine Greifswald approved the study (BB 147/15). All trial participants will provide written informed consent.
: Not applicable.
: The authors declare that they have no competing interests.
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