Text and Data Mining valid from 2019-08-28
Received: 7 May 2019
Accepted: 15 August 2019
First Online: 28 August 2019
Ethics approval and consent to participate
: This study has been approved by the local ethical committee of our Medical University. The approval reference number is UN5080. Due to the retrospective nature of this study and its limitation to a radiological analysis, no consent to participate was obtained. Research has been performed in accordance with the Declaration of Helsinki and was approved by the local ethics committee of the Medical University of Innsbruck. This article does not contain any studies with human participants or animals performed by any of the authors.
: Not applicable.
: The authors declare that they have no competing interests.