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Article History

Received: 28 June 2018

Accepted: 3 September 2018

First Online: 11 September 2018

Ethics approval and consent to participate

: Ethics approval and consent to participate was given by all patients in writing (ethics approval was given by the ethics committee, University of Heidelberg).

: Written informed consent for publication of their clinical details was obtained from the patients.

: The authors declare that they have no competing interests.

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