Funding for this research was provided by:
Wilhelm Sander-Stiftung (2016.049.1)
Walter Schulz-Stiftung, Planegg/Martinsried, Germany
Text and Data Mining valid from 2018-10-10
Received: 10 April 2018
Accepted: 30 August 2018
First Online: 10 October 2018
Ethics approval and consent to participate
: The local ethics committee (Ethik-Kommission der Ärztekammer Hamburg, Hamburg) approved this study. All patients gave written informed consent according to the Helsinki declaration.
: Not applicable.
: The authors declare that they have no competing interests.
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