Text and Data Mining valid from 2019-11-08
First Online: 8 November 2019
Compliance with ethical guidelines
: C.A. Taschner, S. Doostkam, P.C. Reinacher, H. Urbach, A. Rau and M. Prinz declare that they have no competing interests.
: All investigations described in this manuscript were carried out with the approval of the responsible ethics committee and in accordance with national law and the Helsinki Declaration of 1975 (in its current revised form). Informed consent was obtained from the patient in this case if identifiable from images or other information within the manuscript.