Text and Data Mining valid from 2019-09-09
Received: 1 August 2019
Accepted: 10 August 2019
First Online: 9 September 2019
Compliance with ethical guidelines
: R.H. Dahl, A.P. Born, M.L. Børresen and G. Benndorf declare that they have no competing interests.
: For this article no studies with human participants or animals were performed by any of the authors. All studies performed were in accordance with the ethical standards indicated in each case. The patient’s parents consented to publication of the images and clinical information. Written informed consent was obtained.