Received: 21 October 2017
Accepted: 23 May 2018
First Online: 31 May 2018
Ethics approval and consent to participate
: Procedures were followed as outlined in accordance with ethical standards formulated in the Helsinki Declaration 1975 (and revised in 1983). Informed consent was obtained prior to participation in this study with approval by the Ethics Committee at the University Hospital, Cologne (reference number: 13–091). This approval was necessary due to gene analysis made in this study.
: Written informed consent was obtained from the patient for publication of this case report and any accompanying images, and is available on request.
: The authors declare that they have no competing interests.
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