Article History
Received: 19 September 2018
Accepted: 7 October 2019
First Online: 14 November 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: This study retrospectively evaluated anonymous radiographic images obtained in routine clinical practice. Therefore, no ethical evaluation or approval was required according to applicable German law. This was confirmed by the Ethics Committee of the Medical Faculty of the University of Würzburg (reference number 20170317-01).
: It was determined that no formal consent was required for this study.