Text and Data Mining valid from 2018-09-22
Received: 19 April 2018
Accepted: 7 August 2018
First Online: 22 September 2018
Ethics approval and consent to participate
: The study was approved by the Ethics Committee of the Hamburg Chamber of Physicians, Germany, Reference: PV5178, March 1, 2016. Written informed consent was obtained from the patient or a legal guardian.
: The authors declare that they have no competing interests.
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